Lipids are the skin's natural fats. There are 2 kinds of lipids: epidermal and sebaceous. - Epidermal lipids are a mix composed of ceramides, free fatty acids and cholesterol. - Sebaceous lipids include triglycerides, wax esters, and squalene.

Healthy, youthful skin has an abundance of these naturally occurring lipids. As we age, lipid production declines, resulting in rough surface texture, uncomfortable tightness, dullness and loss of facial fullness.

A compromised skin barrier is also more prone to irritation and water loss. This is why it’s important to counter the effects of lipid loss with a topical treatment.