Dr. Sierro’s wart treatment philosophy is evidence-based and individualized: she selects the modality — or combination of modalities — most likely to eradicate the specific wart type in the fewest sessions, with the lowest risk of scarring or recurrence. The following treatments are available at Kare Plastic Surgery & Skin Health Center in Santa Monica.
01
Vbeam Pulsed-Dye Laser
The Vbeam pulsed-dye laser (PDL) is one of the most powerful and precise tools available for wart and molluscum removal in Los Angeles. Operating at a 595nm wavelength that is selectively absorbed by oxyhemoglobin, the Vbeam targets the network of blood vessels that supplies the wart with the nutrients and oxygen it needs to sustain viral replication. By thermally destroying this vascular supply, the Vbeam cuts off the wart’s life support — causing the lesion to die and slough off over the following 1–2 weeks.
The Vbeam is particularly valuable for warts that have failed cryotherapy or topical agents, for warts in cosmetically sensitive locations (face, hands, eyelid margins), for periungual warts where freezing risks nail damage, and for patients who cannot tolerate the discomfort of repeated cryotherapy sessions. Published data support pulsed-dye laser as one of the most effective treatments for recalcitrant warts, with clearance rates of up to 95% for palmar and plantar warts in some series. For molluscum contagiosum specifically, the Vbeam is widely considered the treatment of choice when multiple lesions require rapid resolution.
Best For: Resistant warts, facial warts, molluscum contagiosum, periungual warts, warts in children, palmar and plantar warts unresponsive to cryotherapy
02
Cryotherapy (Liquid Nitrogen)
Cryotherapy with liquid nitrogen is the most widely used and well-established in-office wart treatment in dermatology. Liquid nitrogen, applied to the wart via a spray device or cryoprobe at −196°C, induces rapid cell death within the wart tissue through ice crystal formation, disruption of cell membranes, and vascular stasis. The treated area blisters within 24–48 hours, and the wart tissue separates from the underlying skin as the blister resolves over 1–2 weeks.
In Dr. Sierro’s hands, cryotherapy is administered with precise control of the freeze time, thaw time, and number of freeze-thaw cycles — parameters that significantly influence efficacy and the risk of scarring. Aggressive, dermatologist-administered cryotherapy produces substantially better outcomes than the mild freezing available from over-the-counter products, which do not achieve the −50°C temperature required for reliable viral cell destruction. Most warts require 2–4 cryotherapy sessions at 2–3 week intervals for complete resolution.
Best For: Common warts, plantar warts, flat warts, molluscum contagiosum, and as a first-line treatment for most wart types across the body
03
Surgical Excision & Curettage
Surgical removal of warts under local anesthesia offers the most immediate and definitive resolution for appropriate wart presentations. Dr. Sierro performs both sharp excision (cutting out the wart and its base) and curettage (scraping the wart from the skin surface with a curette instrument), often combined with electrocautery (electrodesiccation) to destroy any residual HPV-infected tissue at the base of the treated area and reduce the risk of recurrence.
Surgical wart removal is particularly indicated for large, solitary warts that have failed other treatments; filiform warts, which can be cleanly snipped away in a single appointment; molluscum lesions in older patients who can tolerate the procedure; and warts where rapid, definitive resolution is medically or professionally important. The availability of surgical excision at Kare Plastic Surgery — in a fully equipped surgical suite, not a makeshift procedure room — reflects Dr. Sierro’s complete spectrum of dermatologic care at this facility.
Best For: Large solitary warts, filiform warts, treatment-resistant warts, molluscum requiring rapid clearance, and cases where single-session resolution is desired
04
Cantharidin (Cantharone)
Cantharidin is a blistering agent derived from the blister beetle that has been used in dermatology for wart and molluscum treatment for decades. Applied to the wart surface in the office as a precise, carefully dosed liquid preparation, cantharidin causes intraepidermal blistering within 24–48 hours — separating the wart from the underlying dermis and allowing it to be removed with the blister roof. The procedure is painless at the time of application (making it particularly valuable in pediatric patients), with discomfort developing as the blister forms.
Cantharidin is one of the most effective agents for molluscum contagiosum treatment — particularly in children, where it can treat multiple lesions rapidly and with significantly less discomfort than cryotherapy. For warts, it is most effective as a combination agent alongside cryotherapy or salicylic acid. FDA approval of cantharidin (Ycanth™) in 2023 has formalized this longstanding dermatologic practice with a standardized, regulated preparation.
Best For: Molluscum contagiosum (especially in children), warts resistant to cryotherapy, multiple warts requiring simultaneous treatment, patients who cannot tolerate cryotherapy discomfort
05
Chemical Ablation (TCA & Salicylic Acid)
Chemical ablation uses topical acids to progressively destroy wart tissue through chemical keratolysis. At Kare Plastic Surgery, Dr. Sierro employs physician-grade chemical agents including trichloroacetic acid (TCA), high-concentration salicylic acid, and combination preparations that are significantly more potent and precisely applied than anything available over the counter. TCA causes immediate protein coagulation and tissue destruction on contact, making it effective for flat warts, verruca plana, and warts in locations where more aggressive procedures may risk scarring.
Chemical ablation is frequently used by Dr. Sierro as part of a combination protocol — chemical treatment between office visits complements in-office cryotherapy or laser sessions, maintaining continuous pressure on the wart virus and reducing the total number of office visits required for resolution. Home-use salicylic acid preparations are also prescribed at appropriate concentrations as between-visit maintenance.
Best For: Flat warts, verruca plana, combination maintenance between office procedures, warts in locations where physical treatments risk scarring
06
Immunotherapy & Intralesional Agents
For warts that have failed all conventional approaches, Dr. Sierro offers several immunotherapy and intralesional treatment options. Candida antigen injection stimulates a localized immune response that can clear not only the injected wart but distant warts at other body sites — making it a powerful option for patients with multiple or recurrent warts. Imiquimod (Aldara) applied topically activates toll-like receptor pathways to stimulate interferon production and immune clearance of HPV-infected cells, and is the treatment of choice for genital warts. Intralesional bleomycin — a cytotoxic agent injected directly into stubborn warts — is available as a last-resort option for truly refractory cases unresponsive to all other modalities.
Best For: Multiple or recurrent warts, genital warts (imiquimod), truly refractory warts unresponsive to laser, cryotherapy, and chemical treatment