Reserved for heat-sensitive "active" ingredients, such as vitamins, preservatives, and fragrances, added once the mixture drops below ) to preserve their properties. Key ingredients are categorized by their function:
Necessary for the product’s integrity, including emulsifiers (linking oil and water), thickeners (controlling viscosity), and preservatives (preventing microbial growth). Formulas and Production of Cosmetics, Productio...
Contains water-soluble ingredients like distilled water, aloe vera, and humectants (e.g., glycerin). Reserved for heat-sensitive "active" ingredients