Which act made significant changes to include cosmetics in regulatory oversight?

The Food, Drug, and Cosmetic Act introduced significant changes to the regulatory oversight of cosmetics, establishing the FDA's authority to oversee the safety of cosmetics in addition to food and drugs. Prior to this act, there was little regulation surrounding cosmetics, which often led to safety concerns and consumer health risks. The enactment of this legislation made it mandatory for companies to ensure their products were safe for use and provided consumers with improved protections against harmful substances that could be included in cosmetic products. This comprehensive regulatory framework marked an important shift in how cosmetics were viewed within the realm of public health and consumer safety, placing them under the purview of federal oversight for the first time.