Occlusive moisturizers are skincare products that contain ingredients that create a physical barrier on top of the skin to keep it moist and hydrated. These ingredients tend to be heavy, greasy, and often sticky. Occlusive ingredients work by preventing water from evaporating off the skin, which is known as transepidermal water loss (TEWL) . They create a waterproof coating on the skins surface, which helps to lock in hydration and prevent irritants, allergens, and other harmful particles from entering the skin.
Some common occlusive ingredients found in skincare products include:
- Petroleum jelly (paraffin)
- Silicones
- Waxes (like carnauba or beeswax)
- Most oils and butters
- Mineral oil
- Hydrocarbons
- Sterols
- Wax esters
Occlusive ingredients are often used in combination with other moisturizing agents, such as humectants and emollients, for best performance and skin feel. They are safe to use and are regulated by the U.S. Food and Drug Administration (FDA) under cosmetic rules as they are commonly found in personal care products like lotions, moisturizers, hair care products, etc. .
Positive aspects of occlusive moisturizers include their ability to lock in hydration, prevent TEWL, and improve skin texture and suppleness. However, some occlusive ingredients can feel heavy and greasy on the skin, so its best to include them along with lighter-feeling ingredients like humectants when creating moisturizing skincare products.
In summary, occlusive moisturizers are skincare products that contain ingredients that create a physical barrier on top of the skin to keep it moist and hydrated. They are safe to use and are regulated by the FDA. Some common occlusive ingredients include petroleum jelly, silicones, waxes, and most oils and butters. Occlusive moisturizers can lock in hydration, prevent TEWL, and improve skin texture and suppleness. However, some occlusive ingredients can feel heavy and greasy on the skin.
