Humectant

Humectants are hygroscopic molecules that attract and bind water molecules, drawing moisture into the outermost layer of skin (the stratum corneum). They work by forming hydrogen bonds with water, pulling it from the dermis or from humid ambient air into the epidermis. Common cosmetic humectants include glycerin, hyaluronic acid, and panthenol. Because humectants can draw water out of skin in very dry environments, they are often paired with an occlusive to seal in the moisture they attract.

• Hyaluronic Acid Ingredient dossier ↗

• Occlusive An ingredient that forms a physical barrier on the skin surface to prevent water loss.
• Emollient An ingredient that softens and smooths skin by filling gaps between skin cells.