Final answer:
The FDA requires companies to place a warning on labels if their cosmetic products contain less than 0.5% of certain ingredients and have not been tested.
The FDA regulates but does not pre-approve dietary supplements and requires disclaimers for claims. Medications are subjected to strict FDA approval for safety and efficacy.
Step-by-step explanation:
Companies are not required by the FDA to put a warning on the label if they contain less than 0.5% of certain ingredients. In general, the cosmetic industry is responsible for the safety of its products, and the FDA does not mandate pre-market approval or testing.
However, they must include a warning if the products have not been tested. While the FDA oversees the use of colors in products and supplements, and they have to follow Good Manufacturing Standards, it does not approve specific claims that supplements can cure or prevent diseases, which is why disclaimers are necessary on labels.
Furthermore, when it comes to medications, the FDA does require stringent testing and regulations to ensure safety and efficacy before they are sold in pharmacies.