Cosmetic products are applied directly to the skin, hair, lips, nails and other external parts of the body. Therefore, their safety and quality must be carefully evaluated before they reach consumers. Products such as creams, lotions, shampoos, soaps, face washes, powders, lipsticks and hair colours may contain several raw materials, preservatives, fragrances and active ingredients. Cosmetic product testing helps manufacturers identify contamination, confirm product quality, evaluate stability and meet applicable safety and regulatory requirements. The exact tests required depend on the product type, formulation, ingredients, intended use and target market. Why Is Cosmetic Product Testing Important? Cosmetics can become unsafe because of microbial contamination, poor-quality raw materials, restricted substances, heavy metals, unsuitable preservative levels or incorrect storage conditions. These issues may lead to skin irritation, allergic reactions, infections, changes in product perf...