How to moisturize your skin - Harvard Health
https://www.health.harvard.edu/staying-healthy/how-to-moisturize-your-skin
WEBOct 25, 2016 · Moisturizers, which rehydrate the top layer of skin cells and seal in the water, are one of the best ways to treat dry skin. They contain three main types of ingredients: Humectants. These substances help attract moisture. They include ceramides (pronounced ser-A-mids), glycerin, sorbitol, hyaluronic acid, and lecithin. Occlusives.
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