Caffeine

Caffeine is a naturally occurring purine alkaloid extracted from coffee beans, tea leaves, and other botanical sources. In cosmetic formulations, it's valued for its ability to temporarily constrict blood vessels, reducing puffiness and dark circles, particularly in eye care products, while also providing antioxidant protection against UV-induced free radicals. Formulators choose anhydrous caffeine powder for its high purity (typically 98-100%), excellent stability, and versatility in both water-based and anhydrous systems, with typical use concentrations ranging from 0.5-3%.