Dermatology: PRP Hair Loss

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PRP for Hair Loss Los Angeles | Hair Restoration | Dr. Sierro & Dr. Karamanoukian | Kare Surgery

Kare Plastic Surgery & Skin Health Center  ·  Santa Monica & Beverly Hills, Los Angeles

PRP for Hair Loss in Los Angeles

Comprehensive hair loss diagnosis and treatment — PRP, exosome therapy, Dutasteride, Minoxidil, microneedling, and FUE hair transplant — by board-certified dermatologist Dr. Tiffany Sierro and board-certified plastic surgeon Dr. Raffy Karamanoukian in Santa Monica

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BoardCertified Dermatologist
FACSBoard-Certified Plastic Surgeon
AllHair Loss Types Treated
PRP& Exosome Therapy On-Site
FUEHair Transplant Available

Comprehensive Hair Restoration

Hair Loss Treatment in Los Angeles: Diagnosis First. Science-Driven Care. Lasting Results.

Hair loss is one of the most psychologically impactful conditions in medicine — affecting an estimated 50 million men and 30 million women in the United States alone, crossing every demographic and age group, and carrying a burden of self-consciousness and diminished confidence that is consistently underestimated by providers who treat it as a cosmetic inconvenience rather than a medical condition deserving physician-level attention.

At Kare Plastic Surgery & Skin Health Center in Santa Monica, hair loss is approached with the same clinical rigor as any medical dermatologic condition. Board-certified dermatologist Dr. Tiffany Sierro provides the diagnostic foundation — identifying the specific type, stage, and etiology of hair loss through clinical examination, dermoscopy, trichoscopy, and laboratory evaluation when indicated — before any treatment is initiated. This diagnostic precision is what separates physician-supervised hair loss care from the protocol-driven treatments administered at non-physician hair restoration chains throughout Los Angeles.

The Kare hair restoration program offers the complete evidence-based treatment spectrum: PRP (platelet-rich plasma) injections, exosome therapy, microneedling with scalp delivery of biological agents, prescription Dutasteride and Minoxidil, and surgical FUE (follicular unit extraction) hair transplantation performed by Dr. Karamanoukian. This breadth of capability — from the most conservative topical protocols to the most definitive surgical restoration — allows Dr. Sierro and Dr. Karamanoukian to recommend the treatment that will actually produce the result each patient is seeking, not the treatment the practice is limited to offering.

Hair Loss Conditions We Treat at Kare

  • Androgenetic alopecia — male pattern baldness (Hamilton-Norwood)
  • Female pattern hair loss — diffuse thinning (Ludwig scale)
  • Alopecia areata — autoimmune patchy hair loss
  • Telogen effluvium — stress-related diffuse shedding
  • Anagen effluvium — chemotherapy-related hair loss
  • Traction alopecia — hairstyle-related follicular damage
  • Frontal fibrosing alopecia — scarring alopecia at hairline
  • Lichen planopilaris — inflammatory scarring alopecia
  • Postpartum hair loss — hormonal effluvium after pregnancy
  • Medication-induced hair loss
  • Nutritional deficiency-related hair thinning
  • Thyroid and hormonal hair loss

Our Physician Team

Dermatologist + Plastic Surgeon: The Only Hair Restoration Team in Santa Monica That Covers Every Option

Hair Loss Diagnosis & Medical Dermatology

Dr. Tiffany Sierro, MD
Board-Certified Dermatologist

Dr. Tiffany Sierro is a board-certified dermatologist whose formal training encompasses the complete spectrum of medical and surgical dermatology, including the diagnosis and treatment of all forms of alopecia. Her board certification by the American Board of Dermatology represents the gold standard credential in dermatologic practice — reflecting training in scalp dermoscopy, trichoscopy, hair pull test interpretation, laboratory evaluation of hair loss, histopathologic analysis of scalp biopsies, and the full pharmacologic management of androgenetic alopecia, alopecia areata, and scarring alopecias.

Dr. Sierro’s approach begins with accurate diagnosis — a step that is frequently bypassed at non-physician hair restoration chains where all hair loss is treated identically regardless of its etiology. The distinction between androgenetic alopecia, telogen effluvium, alopecia areata, and scarring alopecia has critical treatment implications: a treatment protocol appropriate for male pattern baldness may be entirely inappropriate — and potentially harmful — for a patient with frontal fibrosing alopecia or lichen planopilaris. Physician-level dermatologic diagnosis is not optional in hair restoration. It is the indispensable first step.

Surgical Hair Restoration & FUE Transplantation

Dr. Raffy Karamanoukian, MD, FACS
Board-Certified Plastic Surgeon

Dr. Raffy Karamanoukian is a UCLA-trained, double board-certified plastic and reconstructive surgeon whose surgical expertise in scalp anatomy, wound healing, and tissue management provides the foundation for FUE hair transplantation at Kare Plastic Surgery. His 20+ years of surgical experience — encompassing reconstructive scalp surgery, flap design, and microsurgery — translates directly to the technical demands of follicular unit extraction: precise graft harvesting with minimal transection, accurate recipient site creation in the appropriate density and angle, and graft placement that respects the natural direction of hair growth at every scalp zone.

As the practice director, Dr. Karamanoukian also oversees the administration of scalp PRP and exosome injections at Kare — bringing a surgeon’s understanding of scalp vascularity and follicular anatomy to the injection protocol and ensuring that biological agents are delivered to the precise depth and location where they produce maximum therapeutic effect. His collaboration with Dr. Sierro on complex hair loss cases — patients with combined medical and surgical needs — creates a genuinely integrated hair restoration program unique in the Santa Monica aesthetic market.

“Hair loss treatment without accurate diagnosis is guesswork. Before we recommend a single injection or prescription, we understand exactly what type of hair loss we are treating, why it is occurring, and which modality the published evidence supports for that specific condition. That clinical discipline is what our patients deserve.”

— Dr. Tiffany Sierro, MD — Board-Certified Dermatologist, Kare Plastic Surgery

Understanding Hair Loss

Types of Hair Loss: Why Accurate Diagnosis Determines Treatment Success

Hair loss is not a single condition — it is a collection of clinically distinct entities with different etiologies, progression patterns, and treatment responses. Dr. Sierro evaluates each patient’s hair loss comprehensively before any treatment is initiated.

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Male Pattern Baldness (Androgenetic Alopecia)

The most common form of hair loss in men, male androgenetic alopecia is a genetically determined, androgen-mediated miniaturization of hair follicles in the temporal, frontal, and vertex scalp regions — classified by the Hamilton-Norwood scale (I–VII). DHT (dihydrotestosterone), a potent androgen derived from testosterone by 5-alpha reductase enzyme activity, binds to androgen receptors in susceptible follicles and progressively shortens the anagen (growth) phase until terminal hairs are replaced by fine, unpigmented vellus hairs. Treatment is most effective when initiated early, before irreversible follicular miniaturization has occurred. PRP, Dutasteride, Minoxidil, and FUE transplantation all have evidence-supported roles in male pattern baldness management.

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Female Pattern Hair Loss

Female pattern hair loss (FPHL) — also called androgenetic alopecia in women — presents differently from male pattern baldness: women develop diffuse thinning at the crown and central scalp with preservation of the frontal hairline, classified by the Ludwig scale (I–III). The androgen sensitivity of follicles in women is compounded by estrogen’s protective role on the hair cycle; menopause, postpartum hormonal shifts, and conditions such as polycystic ovarian syndrome (PCOS) can accelerate FPHL significantly. PRP is particularly well-studied in female pattern hair loss, with a 2021 meta-analysis of 1,569 female patients confirming excellent results for hair density improvement. Dr. Sierro evaluates for underlying hormonal drivers at consultation and coordinates with endocrinologists when indicated.

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Alopecia Areata

Alopecia areata is an autoimmune condition in which T-lymphocytes attack the hair follicle matrix, producing characteristically sharply demarcated, circular patches of non-scarring hair loss. It affects approximately 2% of the population at some point in their lifetime and can progress to alopecia totalis (complete scalp hair loss) or alopecia universalis (complete body hair loss) in severe cases. Treatment options managed by Dr. Sierro include intralesional triamcinolone injection, topical immunotherapy (DPCP), systemic immunosuppressants for extensive disease, JAK inhibitors (baricitinib, ritlecitinib) which received FDA approval for alopecia areata in 2022–2023, and PRP as a safe, steroid-sparing adjunct with demonstrated clinical evidence.

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Telogen Effluvium & Stress-Related Hair Loss

Telogen effluvium is a diffuse, reactive hair loss that occurs when a physical or emotional stressor — major illness, surgery, rapid weight loss, childbirth, severe psychological stress, thyroid disorders, or nutritional deficiency — disrupts the normal hair cycle and causes a large proportion of follicles to simultaneously enter the telogen (resting/shedding) phase. The result is diffuse, alarming shedding that typically begins 2–4 months after the triggering event. In most cases, telogen effluvium is self-limiting and resolves within 6 months of the stressor’s resolution. However, chronic telogen effluvium — persistent shedding lasting more than 6 months — requires dermatologic evaluation to identify the underlying trigger. PRP accelerates recovery, and Dr. Sierro’s laboratory evaluation protocol identifies reversible systemic causes including iron deficiency, thyroid dysfunction, and nutritional insufficiency.

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Scarring Alopecias (Lichen Planopilaris & FFA)

Scarring alopecias — including lichen planopilaris (LPP), frontal fibrosing alopecia (FFA), and discoid lupus erythematosus — are inflammatory conditions that destroy the hair follicle and replace it with fibrous scar tissue, producing permanent hair loss in affected areas. They require urgent dermatologic diagnosis and anti-inflammatory treatment to arrest progression, as destroyed follicles cannot be restored. Dr. Sierro manages scarring alopecias with topical and systemic anti-inflammatory therapy, hydroxychloroquine, 5-alpha reductase inhibitors for FFA, and close monitoring for treatment response. Identifying scarring alopecia is a critical reason why physician-level diagnosis is mandatory before any hair loss treatment is initiated.

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Traction Alopecia & Postpartum Hair Loss

Traction alopecia results from chronic mechanical tension on hair follicles from tight hairstyles — braids, weaves, extensions, ponytails — producing hair loss at the hairline and temples that begins as reversible follicular inflammation and can progress to permanent scarring if the traction is not relieved. Postpartum hair loss is a form of telogen effluvium triggered by the hormonal shift after delivery, typically resolving within 12 months. Both conditions benefit from early intervention and behavioral modification counseling. PRP can accelerate follicular recovery in early-stage traction alopecia where follicles are still viable, and nutritional support is often a key component of postpartum recovery management.

50MMen in the US affected by androgenetic alopecia
30MWomen in the US affected by female pattern hair loss
2%Lifetime prevalence of alopecia areata in the population
1,569Patients in 2021 meta-analysis confirming PRP efficacy for FPHL

Treatment Modalities

Comprehensive Hair Restoration Treatments at Kare Plastic Surgery

Dr. Sierro selects the treatment modality — or combination — based on the precise diagnosis, severity of hair loss, patient health status, and treatment goals. The following evidence-based options are available at Kare Plastic Surgery & Skin Health Center.

01

PRP (Platelet-Rich Plasma) for Hair Loss

PRP hair restoration is the most established and most extensively studied non-surgical biological treatment for androgenetic alopecia and alopecia areata. The procedure begins with a small blood draw from the patient’s arm, which is processed in a medical-grade centrifuge to concentrate the platelet fraction — producing a plasma preparation that contains up to 5–10 times the platelet concentration found in normal whole blood. This platelet-rich plasma is then injected into the scalp at the level of the hair follicle bulge — the anatomical zone where follicular stem cells reside — delivering a concentrated dose of growth factors including PDGF, TGF-β, VEGF, EGF, IGF-1, and FGF.

These growth factors stimulate follicular stem cell activity, prolong the anagen (growth) phase of the hair cycle, promote neovascularization of the perifollicular capillary network, and rescue miniaturizing follicles from progressive DHT-mediated atrophy. A 2020 systematic review of six randomized controlled trials (92 patients) confirmed PRP’s positive effect on female pattern hair loss with significant increases in hair thickness and density. A 2020 meta-analysis found significantly increased hair counts per cm² in PRP-treated patients versus controls, with improvements in both density and shaft diameter. A 2020 study confirmed PRP as a “safe, effective, steroid-sparing, and suitable alternative in alopecia areata.”

Best For: Male and female androgenetic alopecia, alopecia areata, telogen effluvium, postpartum hair loss; mild to moderate stages with functioning follicles; in combination with Minoxidil, Dutasteride, and exosomes
02

Exosome Therapy for Hair Restoration

Exosome hair therapy represents the frontier of biological regenerative medicine for hair loss — and the most significant advance in non-surgical hair restoration science since the introduction of PRP. Exosomes are nano-sized extracellular vesicles (40–150nm) derived from mesenchymal stem cells that carry a sophisticated biological payload: thousands of growth factors, cytokines, mRNA transcripts, and microRNA molecules that directly regulate cell proliferation, differentiation, and tissue repair at the molecular level.

When injected into the scalp or delivered through microneedling channels, exosomes signal dormant or miniaturizing follicles to re-enter active growth, stimulate Wnt/β-catenin and Sonic Hedgehog signaling pathways that are essential for hair follicle cycling, promote VEGF-mediated neovascularization of the perifollicular network, and suppress inflammatory signals that drive follicular miniaturization. Published data confirm that exosome therapy produces hair density improvements superior to PRP in head-to-head comparisons, with longer-lasting results and a more potent anti-inflammatory effect — making it particularly valuable for patients with alopecia areata, early scarring alopecia, and treatment-resistant androgenetic alopecia where PRP alone has produced inadequate response.

Best For: Treatment-resistant androgenetic alopecia, alopecia areata, advanced hair thinning, post-chemotherapy hair recovery; maximum biological effect when combined with PRP and microneedling
03

Microneedling for Hair Loss

Scalp microneedling uses a medical-grade device with fine needles (0.5–1.5mm) to create controlled micro-injuries in the scalp dermis, stimulating wound healing responses that include collagen production, growth factor release, and increased dermal papilla cell proliferation — all of which support follicular activity and hair growth. Microneedling also dramatically increases the permeability of the scalp to topically applied or injected agents, making it the ideal delivery method for combining with PRP, exosomes, or topical Minoxidil to amplify their penetration and follicular uptake.

A 2013 randomized controlled trial published in the Journal of Cutaneous and Aesthetic Surgery found that microneedling combined with Minoxidil produced a 4-fold greater increase in hair count than Minoxidil alone. When combined with PRP or exosomes at Kare, microneedling creates a synergistic biological amplification — the micro-injuries providing the wound healing stimulus and the injected biological agents providing the cellular fuel for follicular regeneration. Dr. Sierro uses microneedling as a component of her combination hair restoration protocols and as a standalone scalp treatment for patients seeking a non-injectable maintenance option.

Best For: Combination with PRP or exosomes for maximum efficacy; maintenance between PRP sessions; patients who prefer minimal-injection protocols; delivery vehicle for topical Minoxidil enhancement
04

Dutasteride for Hair Loss

Dutasteride is a dual 5-alpha reductase inhibitor (blocking both Type I and Type II 5-AR isoenzymes) that reduces serum and scalp DHT levels by more than 90% — significantly more complete DHT suppression than Finasteride, which inhibits only Type II 5-AR and reduces DHT by approximately 65–70%. This more complete androgenic blockade makes Dutasteride the most pharmacologically potent oral treatment available for androgenetic alopecia in men, though it is prescribed off-label for hair loss as it is FDA-approved only for benign prostatic hyperplasia.

Head-to-head randomized controlled trial data confirm Dutasteride’s superiority over Finasteride for male pattern baldness: a large Korean multicenter trial demonstrated significantly greater improvement in hair counts and global photographic assessment with Dutasteride 0.5mg compared to Finasteride 1mg at 24 weeks. Dutasteride is also increasingly used off-label in women with hyperandrogenism-driven female pattern hair loss and in patients with PCOS-associated alopecia, under careful physician supervision. Dr. Sierro evaluates each patient’s hormonal profile, reproductive status, and comorbidities before prescribing Dutasteride, and monitors for sexual side effects that, while less common than with Finasteride, require clinical attention.

Best For: Men with moderate to advanced androgenetic alopecia seeking maximum pharmacologic DHT suppression; patients who have had inadequate response to Finasteride; women with documented hyperandrogenism (under physician monitoring)
05

Minoxidil (Topical & Oral)

Minoxidil is the only FDA-approved topical treatment for both male and female pattern hair loss and remains a cornerstone of non-surgical hair restoration at every stage of treatment intensity. Its mechanism of action involves vasodilation of scalp blood vessels (Minoxidil is a potassium channel opener), increasing perifollicular blood flow and nutrient delivery, prolonging the anagen phase, and stimulating follicular keratinocyte proliferation. Topical Minoxidil (2% for women, 5% for men) applied once or twice daily produces measurable hair density improvements in 40–60% of users within 6–12 months of consistent use.

Low-dose oral Minoxidil — at doses of 0.5–2.5mg daily, far below the 10–40mg doses used for hypertension — has emerged in recent years as a highly effective and better-tolerated alternative to topical Minoxidil for patients with scalp sensitivity, application compliance challenges, or inadequate response to topical formulations. Multiple published case series and randomized trials confirm significant hair density improvements with low-dose oral Minoxidil in both male and female pattern hair loss, with a favorable side effect profile at these low doses. Dr. Sierro prescribes both topical and oral Minoxidil formulations and designs combined regimens that integrate Minoxidil with PRP and exosome treatments for maximum synergistic effect.

Best For: First-line pharmacologic treatment for all androgenetic alopecia stages in men and women; maintenance between PRP sessions; combination with Dutasteride for maximum medical management of male pattern baldness
06

FUE Hair Transplant (Follicular Unit Extraction)

For patients whose androgenetic alopecia has progressed to the point where existing follicles cannot be reliably resurrected by biological treatments — because miniaturization has advanced to the point of complete follicular loss in the affected zones — surgical hair restoration through follicular unit extraction (FUE) provides the only option for restoring hair density in permanently bald areas. FUE harvests individual follicular units from the androgen-resistant donor zone of the posterior scalp using a small punch device (0.8–1.0mm), then transplants these DHT-resistant follicles into recipient sites created in the bald or thinning zones of the scalp.

Dr. Karamanoukian performs FUE hair transplantation with the same anatomical precision and surgical discipline he applies to all procedures at Kare. His understanding of scalp blood supply, follicular unit angulation, natural hair growth direction variability across scalp zones, and wound healing biology — knowledge derived from his UCLA surgical training and two decades of reconstructive scalp surgery — translates directly into graft viability, natural-appearing results, and minimal transection rates. FUE at Kare Plastic Surgery is performed under local anesthesia with oral sedation as an outpatient procedure. Most patients return to normal activities within 5–7 days and see the first signs of transplanted hair growth at 3–4 months, with full results visible at 12–18 months. PRP is administered intraoperatively and at follow-up sessions to accelerate graft survival and optimize the growth of transplanted follicles.

Best For: Advanced androgenetic alopecia with established bald zones; patients who want permanent restoration not achievable with non-surgical methods; hairline restoration and crown density; combined with post-operative PRP for maximum graft survival

Who We Treat

Who Is a Good Candidate for Hair Loss Treatment in Los Angeles?

Hair loss treatment is appropriate for a wide range of patients — from those experiencing early signs of thinning who want to intervene before significant loss occurs, to those with more advanced alopecia seeking the most effective available restoration. Dr. Sierro assesses each patient’s candidacy comprehensively at consultation, tailoring the treatment approach to the specific diagnosis, stage, and goals.

✓   Ideal Candidates for Hair Loss Treatment at Kare Plastic Surgery

  • Men and women experiencing early to moderate androgenetic alopecia who want to intervene during the stage when biological treatments (PRP, Dutasteride, Minoxidil) are most effective — before follicular miniaturization becomes irreversible and the only option is surgical transplantation
  • Patients with active hair shedding — whether from male pattern baldness, female pattern hair loss, or telogen effluvium — who want accurate physician diagnosis of the cause before beginning any treatment protocol
  • Women experiencing hair thinning after pregnancy, menopause, or hormonal transitions who need a board-certified dermatologist to evaluate the hormonal, nutritional, and genetic components of their specific hair loss pattern and design an individualized treatment plan
  • Patients with alopecia areata who have tried topical steroids or intralesional injections elsewhere with incomplete response and want access to emerging treatments including JAK inhibitor therapy and exosome-enhanced PRP
  • Men seeking an alternative to Finasteride due to sexual side effects or inadequate response, who want dermatologist evaluation for Dutasteride or other pharmacologic options with a stronger DHT-suppression profile
  • Active athletes, health-conscious professionals, and Santa Monica beach lifestyle patients who are particularly affected by visible hair thinning and want the most proactive, evidence-based hair maintenance program available
  • Patients with advanced androgenetic alopecia who want a plastic surgeon’s expert assessment of their candidacy for FUE hair transplantation — including donor zone density evaluation, recipient site mapping, and realistic expectation-setting for graft count and final density
  • Those who have received PRP treatments elsewhere without achieving adequate results and want a physician-supervised combination protocol that adds exosome therapy, microneedling, and prescription pharmacologic management to their existing PRP regimen
  • Patients with hair loss following chemotherapy, radiation, or severe illness who want physician guidance on the timing and nature of treatment most appropriate for their recovery phase
  • Anyone who has noticed unexplained hair thinning or shedding and wants a formal dermatologic evaluation — because hair loss that appears cosmetic may indicate an underlying systemic condition including thyroid disease, iron deficiency, autoimmune disease, or medication toxicity that requires medical management independent of any hair restoration treatment

For patients with light-colored, white, or gray hair: PRP is less effective in follicles with low melanin content because the growth factors work primarily on follicles with active melanogenic activity. However, exosome therapy works through cell signaling pathways that are melanin-independent, making it the preferred biological treatment for patients with light-colored hair. Dr. Sierro provides an honest assessment of expected response for all hair types at consultation.

Your Treatment Experience

What to Expect: Hair Loss Treatment at Kare Plastic Surgery

Comprehensive Hair Loss Consultation & Diagnosis

Your appointment begins with Dr. Sierro’s thorough dermatologic evaluation of your hair loss. She performs a clinical scalp examination, dermoscopy and trichoscopy to evaluate follicular unit density and miniaturization patterns, a hair pull test to assess active shedding, and review of your personal and family history of hair loss, medications, hormonal history, nutritional status, and recent physiological stressors. When indicated, blood work is ordered — including thyroid panel, iron studies (ferritin), CBC, hormone levels (testosterone, DHEA-S, prolactin, estradiol), and nutritional markers — to identify systemic contributors before any treatment is initiated.

Personalized Treatment Protocol Design

Based on the established diagnosis and the patient’s stage of hair loss, Dr. Sierro designs an individualized treatment plan. For most androgenetic alopecia patients, this begins with a combination protocol: PRP as the cornerstone biological treatment, Minoxidil (topical or oral) as pharmacologic maintenance, and Dutasteride for male patients with moderate to advanced pattern baldness. Exosome therapy is added for patients seeking maximum biological amplification or those with treatment-resistant disease. FUE consultation with Dr. Karamanoukian is offered to patients whose baldness has advanced to where surgical restoration is the most appropriate option.

PRP Session Preparation & Blood Draw

Patients are advised to arrive well-hydrated for their PRP session, as adequate hydration optimizes blood draw yield and platelet concentration. A topical numbing cream is applied to the scalp 30–45 minutes before injection. A small volume of blood (15–30ml) is drawn from the arm and immediately placed in a medical-grade double-centrifuge system that separates and concentrates the platelet-rich plasma fraction. The preparation produces a PRP concentration of 5–10x baseline platelet levels. Calcium chloride activation is applied to release growth factors from platelet alpha-granules before injection.

PRP Scalp Injection & Microneedling Delivery

The concentrated PRP is injected into the scalp at the level of the hair follicle bulge using a fine-gauge needle, systematically covering the zones of thinning or active miniaturization identified at the dermoscopy assessment. When combined with microneedling, the scalp is first treated with the microneedling device to create micro-channels, then PRP or exosome preparation is applied to facilitate direct dermal penetration to the follicular level. The entire scalp injection session takes approximately 30–45 minutes. Patients experience mild pressure and occasional brief stinging, well managed by the topical anesthetic applied before treatment.

Post-Treatment Care & Protocol Maintenance

Patients are advised to avoid shampooing the scalp for 24 hours after PRP injection, avoid direct sun exposure and strenuous exercise for 48 hours, and refrain from applying any topical hair products to the scalp for 24 hours. Mild scalp tenderness and redness at injection sites resolve within 24–48 hours. The initial PRP series consists of 3–4 sessions at 4–6 week intervals, with results beginning to appear at 2–3 months and peak density improvements visible at 6 months. Maintenance sessions every 3–6 months sustain the treatment response. Concurrent Minoxidil and/or Dutasteride use between sessions significantly enhances and extends the PRP benefit.

On treatment expectations: Hair restoration is a process, not a single event. No treatment — PRP, exosomes, or surgery — produces overnight results. The hair cycle’s biology determines the timeline: anagen-phase follicles respond to biological stimulation over weeks to months, and new hair growth from reactivated follicles must complete several weeks of growth before it becomes clinically visible. The most important predictor of hair restoration success is consistency of treatment — patients who commit to the complete protocol and maintenance program achieve the best outcomes.

Common Questions

Frequently Asked Questions About Hair Loss Treatment in Los Angeles

How many PRP sessions do I need for hair loss?

Most patients complete an initial series of 3–4 PRP sessions spaced 4–6 weeks apart. This initial series provides the concentrated growth factor stimulus needed to reactivate dormant follicles and establish the anti-miniaturization effect. Results become visible between 2–3 months and reach their peak at approximately 6 months after the initial series. Maintenance sessions every 3–6 months are recommended to sustain the response, as the hair cycle continuously requires growth factor support to counteract ongoing DHT-mediated miniaturization in androgenetic alopecia. Dr. Sierro monitors treatment response at each visit and adjusts the interval based on the individual patient’s clinical progress.

Is PRP for hair loss effective for women?

Yes — and the published evidence is compelling. A 2021 meta-analysis of 42 studies comprising 1,569 patients (including 776 women with female pattern hair loss) showed that PRP produced excellent results for female pattern hair loss through improvements in hair density evaluation. PRP is also beneficial for postpartum hair loss, stress-related telogen effluvium, and female-pattern alopecia associated with PCOS or hormonal transitions. For women, PRP is particularly valuable as a treatment option because many pharmacologic alternatives — including Finasteride and Dutasteride — are contraindicated or require careful management in women of reproductive age. PRP carries no hormonal effects and no reproductive contraindications, making it ideal as the cornerstone of female hair restoration.

What is the difference between PRP and exosome therapy for hair loss?

PRP uses growth factors concentrated from the patient’s own blood — a proven, well-studied autologous biological approach. Exosome therapy uses stem cell-derived nano-vesicles carrying a broader and more potent biological payload — thousands of growth factors, mRNA molecules, and microRNA that directly regulate follicular stem cell behavior at the molecular level. Published data suggest exosome therapy produces superior hair density improvements compared to PRP alone, with longer-lasting results and a more significant anti-inflammatory effect. At Kare, Dr. Sierro often combines exosomes with PRP and microneedling for maximum biological amplification — the combination of autologous growth factors (PRP) and stem cell signals (exosomes) addressing multiple aspects of follicular biology simultaneously.

Is Dutasteride better than Finasteride for male pattern baldness?

Yes — the clinical evidence supports Dutasteride’s superiority for androgenetic alopecia. Dutasteride inhibits both Type I and Type II 5-alpha reductase isoenzymes, reducing serum DHT by more than 90%, compared to Finasteride’s ∼65–70% reduction through Type II inhibition alone. A large Korean multicenter randomized controlled trial demonstrated statistically significant superiority of Dutasteride 0.5mg over Finasteride 1mg for global hair count improvement at 24 weeks. However, Dutasteride is used off-label for hair loss (it is FDA-approved for BPH), has a longer half-life requiring longer clearance after discontinuation (relevant for men planning to father children), and carries a similar risk profile for sexual side effects as Finasteride. Dr. Sierro evaluates each patient’s candidacy for Dutasteride individually.

Am I a good candidate for FUE hair transplantation?

FUE candidacy depends on several factors: the degree of existing hair loss (Hamilton-Norwood stage), the density and quality of donor follicles in the posterior scalp, the patient’s age and the expected future progression of their pattern baldness, and their goals for hairline and density restoration. Ideal FUE candidates have stabilized hair loss (not rapidly progressing), adequate donor density, realistic expectations about what a single transplant session can achieve in graft count and coverage, and a commitment to concurrent medical management (Minoxidil, Dutasteride, PRP) to protect non-transplanted native hair from ongoing DHT-mediated miniaturization. Dr. Karamanoukian performs a comprehensive scalp and donor zone assessment at consultation and provides honest projection of the achievable result.

Can hair loss be stopped completely?

In most cases, androgenetic alopecia cannot be completely stopped — it is a genetically programmed, hormonally driven process that persists throughout the patient’s lifetime. However, its progression can be significantly slowed, and in many patients substantially reversed, with the appropriate combination of treatments. The most effective strategy combines DHT suppression (Dutasteride or Finasteride), follicular stimulation (PRP, exosomes), improved scalp circulation (Minoxidil), and surgical restoration of permanently lost follicular zones (FUE) when indicated. Patients who begin treatment early — during the first stages of thinning, before significant follicular loss has occurred — consistently achieve the best long-term hair retention outcomes.

How much does PRP for hair loss cost in Los Angeles?

The cost of PRP hair restoration at Kare Plastic Surgery & Skin Health Center in Santa Monica varies based on the number of sessions in the treatment series, whether exosome therapy or microneedling is combined with PRP, and the extent of the scalp area treated. Package pricing for the initial treatment series is available and typically provides a more favorable per-session cost than individual session pricing. PRP for hair loss is a cosmetic procedure and is not covered by health insurance. Prescription medications (Dutasteride, Minoxidil) may have varying coverage depending on the specific plan and indication. Transparent pricing is provided at consultation once Dr. Sierro has assessed the specific treatment plan recommended for your hair loss type and stage.

Start Your Hair Restoration Journey in Los Angeles

Whether you are experiencing early thinning or advanced hair loss, Dr. Tiffany Sierro and Dr. Raffy Karamanoukian at Kare Plastic Surgery & Skin Health Center provide the most complete, physician-supervised hair restoration program in Santa Monica. Contact our office to schedule your consultation today.

(310) 998-5533 Request a Consultation

Kare Plastic Surgery & Skin Health Center  ·  804 7th Street, Santa Monica, CA 90403  ·  (310) 998-5533

Dr. Tiffany Sierro, MD — Board-Certified Dermatologist  ·  Dr. Raffy Karamanoukian, MD, FACS — Board-Certified Plastic Surgeon  ·  RealSelf 100