CFR > Title 21 - Food and Drugs > CHAPTER I—FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES > SUBCHAPTER D—DRUGS FOR HUMAN USE (parts 300 to 370) > PART 347—SKIN PROTECTANT DRUG PRODUCTS FOR OVER-THE-COUNTER HUMAN USE > SUBPART B—Active Ingredients (§347.10 to §347.20) > 347.12—Astringent active ingredients.

347.12—Astringent active ingredients.

The active ingredient of the product consists of any one of the following within the specified concentration established for each ingredient:
(a) Aluminum acetate, 0.13 to 0.5 percent (depending on the formulation and concentration of the marketed product, the manufacturer must provide adequate directions so that the resulting solution to be used by the consumer contains 0.13 to 0.5 percent aluminum acetate).
(b) Aluminum sulfate, 46 to 63 percent (the concentration is based on the anhydrous equivalent).
(c) Witch hazel.