1. Short title This Act may be cited as the Cosmetic Supply Chain Transparency Act of 2023 . 2. Cosmetic regulation Chapter VI of the Federal Food, Drug, and Cosmetic Act ( 21 U.S.C. 361 et seq. ) is amended— (1) by inserting before section 601 the following: A Adulterated and Misbranded Cosmetics ; and (2) by adding at the end the following: B Supply chain transparency 621. Definitions In this subchapter: (1) Brand owner The term brand owner means the entity responsible for bringing a cosmetic to market. (2) Flavor or fragrance company The term flavor or fragrance company means an entity that makes or supplies fragrance or flavor ingredients or fragrance or flavor formulations. (3) Formulating laboratory The term formulating laboratory means an entity that supplies a finished cosmetic product to a retailer or cosmetic company to sell under the retailer or cosmetic company’s brand name. (4) Harmful to human health or the environment The phrase harmful to human health or the environment means, with respect to a nonfunctional constituent— (A) being— (i) a reproductive or developmental toxicant; (ii) persistent, bioaccumulative, and toxic; (iii) an allergen; or (iv) an endocrine disruptor, carcinogen, or mutagen