Sphingolipids - are complex, long chain lipids that help maintain an intact skin barrier and skin hydration by preventing trans-epidermal water loss.

Phospholipids constitute an important structural component of cell membranes. They, too, help maintain skin hydration by preventing trans-epidermal water loss.

By maintaining an intact skin barrier and preventing water loss, both lipids play an important role in delivering healthier, smoother and more youthful-looking skin.