21 CFR 346.20 - Keratolytic active ingredients.

Regulations last checked for updates: Feb 06, 2026

Title 21 - Food and Drugs last revised: Dec 18, 2026

§ 346.20 - Keratolytic active ingredients.

The active ingredient of the product consists of any of the following when used within the concentration range established for each ingredient:

(a) Alcloxa 0.2 to 2 percent.

(b) Resorcinol 1 to 3 percent.

authority: 21 U.S.C. 321,351,352,353,355,360,371

source: 55 FR 31779, Aug. 3, 1990, unless otherwise noted.

cite as: 21 CFR 346.20