CFR › Title 21 › Part 350Part 350 — Antiperspirant Drug Products for Over-the-Counter Human UseSubpart A — General Provisions§ 350.1— Scope.§ 350.3— Definition.Subpart B — Active Ingredients§ 350.10— Antiperspirant active ingredients.Subpart C — Labeling§ 350.50— Labeling of antiperspirant drug products.Subpart D — Guidelines for Effectiveness Testing§ 350.60— Guidelines for effectiveness testing of antiperspirant drug products.