Final answer:
Complaints about cosmetics should be directed to both the manufacturer and the FDA, which oversees the safety regulations and labeling of cosmetic products.
Step-by-step explanation:
Consumer complaints about cosmetics should be sent to the manufacturer and the Food and Drug Administration (FDA). In the United States, the FDA is responsible for regulating cosmetic products, ensuring they are safe for use, properly labeled, and do not contain unapproved color additives.
While not all cosmetics are subject to premarket approval by the FDA, companies must warn consumers if their products have not been safety tested. It's important to note that even though the FDA has the authority to step in to protect public health, it usually does not require pre-market approval or testing of cosmetics.