What does "occlusive" refer to in skincare?

In skincare, "occlusive" refers specifically to ingredients that form a barrier on the skin's surface to prevent moisture loss. This protective layer helps to lock in hydration, making it particularly beneficial for individuals with dry skin or those living in low-humidity environments. Occlusive agents are often found in products such as creams and ointments and can include substances like petroleum jelly, beeswax, or certain oils.

While moisturizing ingredients can play a role in hydrating the skin, they do not necessarily create a barrier like occlusive ingredients do. Likewise, ingredients that absorb excess oil target oiliness rather than focusing on moisture retention, and natural extracts derived from plants may offer various benefits, but they do not inherently provide the occlusive properties that help seal in moisture. Understanding the function of occlusive ingredients is crucial for tailoring skincare routines to specific skin needs, particularly for hydration maintenance.