Ceramides are important lipids in the hydrolipid film (which protects the external layers of skin). Produced naturally in healthy skin, they strengthen the skin barrier, helping to prevent moisture loss due to evaporation and keeping out irritants that can cause inflammation and itching. When skin’s Ceramide levels fall the skin barrier is impaired. Skin can start to lose water and become dry and irritated.

Eucerin uses synthetic Ceramides that are biologically-identical and that enhance skin’s natural barrier – locking in moisture and preventing dryness and irritation.

Biotin (also known as Vitamin B7) is a water-soluble vitamin that strengthens skin, nails and hair. Biotin activates skin’s own production of lipids (fat), which helps it to return to its natural, healthy looking condition and act as a protective barrier against the outside world.