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How do occlusives moisturize?

Heavier ingredients like silicones, mineral oil, beeswax, cocoa butter, dimethicone, petroleum, and paraffin are categorized as occlusives. These also increase the water content of the skin by bolstering that barrier and retarding the evaporation of water from the surface, but these ingredients are often greasy and best left for treating super dry spots or chapped lips. (Imagine lathering Vaseline all over you!) They are most effective when applied to damp skin.

From The Mind-Beauty Connection: 9 Days to Less Stress, Gorgeous Skin, and a Whole New You by Amy Wechsler.

Dr. Mehmet Oz, MD
Cardiology (Cardiovascular Disease)

Occlusives are oily substances that form a film on the top of skin, which seal in cracks and prevent moisture from escaping. An example of an occlusive is petroleum jelly.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.