Astringent active ingredients.

  1. Law
  2. CFR 21
  3. Food and Drugs
  4. Food and Drug Administration, Department of Health and Human Services
  5. Drugs for Human Use
  6. Anorectal Drug Products for Over-the-Counter Human Use
  7. Active Ingredients
  8. Astringent active ingredients.

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§ 346.18 Astringent 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) 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.

[55 FR 31779, Aug. 3, 1990, as amended at 59 FR 28767, June 3, 1994]


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