How do moisturizers work?
Submited by doctormultimedia on April 30, 2014Skin moisturizer ingredients comprise three categories: humectants, emollients, and preservatives. Urea, glycerin, and alpha hydroxyl acids are humectants that help absorb moisture from the air while helping the skin retain its absorption. Emollients include lanolin, mineral oil, and petrolatum, which help fill in the spaces...