Could occlusives stop water loss from your skin entirely?

Dr. Mehmet Oz, MD
Cardiology (Cardiovascular Disease)

While water loss can be completely halted by an occlusive, once it is removed, water loss resumes at the same rate as before.

Patricia Farris, MD

Moisturizers are composed of occlusives, humectants and emollients. The function of an occlusive ingredient is to form a barrier over the outer most layer of the skin, sealing water in. Occlusives do not stop water loss from the skin entirely, but they do a great job of keeping the skin hydrated. Common occlusives ingredients include petrolatum, waxes, lanolin, mineral oil and ceramides. Botanical oils of sunflower, soybean, jojoba and evening primrose also act as occlusives in moisturizers.

Continue Learning about Moisturizer Ingredients

What is an emollient?
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An emollient is a type of ingredient that softens the skin and smoothes its surface.
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What's a humectant?
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Humectants are ingredients that retain moisture. In a body cleanser, a humectant can help draw water...
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What do protective emollients do?
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Protective emollients sit on top of the skin's surface, allowing skin to feel smooth immediately aft...
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How do occlusives moisturize?
Heavier ingredients like silicones, mineral oil, beeswax, cocoa butter, dimethicone, petroleum, and ...
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