21 CFR § 358.510 - Corn and callus remover active ingredients.

---
identifier: "/us/cfr/t21/s358.510"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "21 CFR § 358.510 - Corn and callus remover active ingredients."
title_number: 21
title_name: "Food and Drugs"
section_number: "358.510"
section_name: "Corn and callus 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"
---


# 358.510 Corn and callus remover active ingredients.

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

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

(b) Salicylic acid 12 to 17.6 percent in a collodion-like vehicle.