Moisturizers provide functional skin benefits, such as making the skin smooth and soft, increasing skin hydration, and improving skin optical characteristics; however, moisturizers also function as vehicles to deliver ingredients to the skin. These ingredients may be vitamins, botanical antioxidants, peptides, skin-lightening agents, botanical anti-inflammatories, or exfoliants. This discussion covers the science of moisturizers.
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Zoe Diana Draelos (2018) studied this question.
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