Examine the labels of products for the following compounds: Glycerin: A natural moisturizer that aids in the restoration of damaged skin. Lactic Acid: A gentle exfoliator that eliminates the outer layer of dead skin cells to enable moisturizers to enter the skin more effectively. Ceramide: These are natural proteins found in the skin's outer layers that retain moisture and protect the skin from environmental contaminants. Skin that is more sensitive and older has fewer amounts of ceramide.