How do moisturizers work?
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Dr. Mehmet Oz answered:Some moisturizers contain humectants, such as glycerin, which help draw moisture up to the top layer of skin from the lower layers, as well as draw moisture from the air if it is humid. Some moisturizers may also contain occlusives, such as petrolatum or mineral oil. These will help prevent water loss from the surface of the skin. Moisturizers containing one or both of these two ingredients help to improve the skin's ability to retain moisture, and can help alleviate dryness.
Some moisturizers contain humectants, such as glycerin, which help draw moisture up to the top layer of skin from the lower layers, as well as draw moisture from the air if it is humid. Some moisturizers may also contain occlusives, such as... More -
RealAge answered:Keeping skin hydrated with moisturizer can help protect it as well as improve the skin's look and texture. Moisturizers use humectants, which are water-binding compounds that hydrate the skin and help prevent water loss, and emollients, which are compounds that smooth and soften the skin.
Keeping skin hydrated with moisturizer can help protect it as well as improve the skin's look and texture. Moisturizers use humectants, which are water-binding compounds that hydrate the skin and help prevent water loss, and emollients,... More

