Makeup formulation is the process of creating cosmetic products by combining various ingredients to achieve desired properties, such as color, texture, and longevity. This involves selecting components like pigments, oils, waxes, and preservatives, which work together to ensure the product is safe, effective, and appealing to consumers. The formulation process also considers factors like skin compatibility and product stability. Chemists and cosmetic scientists often conduct tests to ensure that the makeup performs well under different conditions, such as humidity and temperature, while also being gentle on the skin.