Final answer:
The FDA regulates cosmetics and may restrict certain products if they pose a risk to health and safety.
Step-by-step explanation:
In the United States, the Food and Drug Administration (FDA) regulates cosmetics, including restricting certain products or substances that pose a risk to health, safety, and welfare.
The FDA defines cosmetics as products 'intended to be applied to the human body for cleansing, beautifying, promoting attractiveness, or altering the appearance without affecting the body's structure or functions'.
If the FDA finds that a product or substance in the cosmetic industry presents a risk to health and safety, the board may adopt the restriction established by the FDA's regulation.