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Box 13.1

Optimizing Use of Over-the-Counter Salicylic Acid Therapy for Warts

Apply 17% salicylic acid liquid to wart(s).

May use a plaster impregnated with salicylic acid if desired.

May use a higher concentration of salicylic acid for management of warts on the plantar surface of the foot.

Air-dry for 2 to 3 minutes (develops into a white film).

Occlude surface of wart with duct tape or similar adhesive tape.

Remove tape in the morning.

If further debridement is necessary, gently file tissue down with an emery board. Ensure tool is used only for this purpose to avoid spread.

Repeat nightly until wart is resolved.

Notes

This treatment is most effective for plantar warts.

Do not apply to facial, fold, or genital area warts.

If area becomes macerated or inflamed, withhold treatment for 1 to 3 nights, then resume.

May take up to 8 weeks to see improvement in the wart. Prolonged treatment is almost always necessary, particularly for plantar warts.