21 CFR 346.18
§ 346.18 Astringent active ingredients.
United States · 21 CFR — Food and Drugs · Status: effective
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- Citation
- 21 CFR 346.18, § 346.18 Astringent active ingredients, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/86622
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Full text
The active ingredient of the product consists of any of the following when used within the concentration range established for each ingredient:
(a) Calamine, within a concentration range of 5 to 25 percent by weight per dosage unit (based on the zinc oxide content of calamine).
(b) Witch hazel, 10 to 50 percent.
(c) Zinc oxide, within a concentration range of 5 to 25 percent by weight per dosage unit.
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.