Occlusive agents are typically oily substances that coat the stratum corneum, providing an emollient effect and the ability to reduce transepidermal water loss (TEWL).
What are the benefits?
Occlusive ingredients appear to be most beneficial when applied to moist skin and are only effective when they are on the skin since transepidermal water loss (TEWL) returns to normal after removal. Occlusives are sometimes paired with humectants.
Some examples of synthetic occlusive ingredients are:
Some examples of natural occlusive ingredient:
Borage seed oil