21 CFR § 358.110 - Wart remover active ingredients.

---
identifier: "/us/cfr/t21/s358.110"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "21 CFR § 358.110 - Wart remover active ingredients."
title_number: 21
title_name: "Food and Drugs"
section_number: "358.110"
section_name: "Wart remover active ingredients."
chapter_name: "FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES"
subchapter_number: "D"
subchapter_name: "DRUGS FOR HUMAN USE"
part_number: "358"
part_name: "MISCELLANEOUS EXTERNAL DRUG PRODUCTS FOR OVER-THE-COUNTER HUMAN USE"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "21 U.S.C. 321, 351, 352, 353, 355, 360, 371."
regulatory_source: "55 FR 33255, Aug. 14, 1990, unless otherwise noted."
cfr_part: "358"
---


# 358.110 Wart remover active ingredients.

The product consists of any of the following active ingredients within the specified concentration and in the dosage form established for each ingredient.

(a) Salicylic acid 12 to 40 percent in a plaster vehicle.

(b) Salicylic acid 5 to 17 percent in a collodion-like vehicle.

(c) Salicylic acid 15 percent in a karaya gum, glycol plaster vehicle.