Glycerin is a gentle, non-irritating, nontoxic, skin safe humectant, which is an ingredient that holds water against the skin. It is used in moisturizers due to its water-binding capabilities.

Glycerin helps the skin retain moisture. It appears to be a beneficial treatment for many skin conditions such as psoriasis and some non-melanoma skin cancers related to aging skin. It can augment skin rebuilding and speed wound healing. It eases itching and dryness associated with eczema and plumps up fine lines in aged skin.