Occlusive Agents: Physical, Protective Films
Occlusive agents: produce a physical, protective film on the skin that keeps water in. Some examples include petroleum jelly, oils, or waxes.
Humectants: These bring water to the skin’s surface from sources close by, which frequently means more depthful layers in the skin, the upper layer of the skin, called the epidermis, possibly can be dry but the layer of the skin beneath it, the dermis, may have water. So the humectants draw the water up from the dermis to the drier epidermis. Humectants can also use water from the environment, but only if it's humid enough. Some examples include glycerin, alpha hydroxy acids, urea, and honey.
Humectants: These bring water to the skin’s surface from sources close by, which frequently means more depthful layers in the skin, the upper layer of the skin, called the epidermis, possibly can be dry but the layer of the skin beneath it, the dermis, may have water. So the humectants draw the water up from the dermis to the drier epidermis. Humectants can also use water from the environment, but only if it's humid enough. Some examples include glycerin, alpha hydroxy acids, urea, and honey.