Ceramides are lipid molecules that are found in high concentrations within cell membranes. In the top layer of the skin, ceramides hold skin cells together, forming a protective layer that plumps the skin and retains moisture.
Unfortunately, ceramide levels decline with age. That’s one reason skin becomes drier as a person grows older. Harsh cleansers can also disrupt ceramides and lipids, leading to dry skin. Diet plays a role too. Eating a diet that lacks essential fatty acids can disrupt skin’s natural barrier against moisture loss. A certain amount of dietary fat is important for healthy skin. Dietary fatty acids can be found in nuts, seeds, oily fish such as salmon and also avocados.
Ceramides have the unique ability to rejuvenate skin’s appearance. They hold skin cells together, forming a protective layer that plumps the skin and holds moisture. They also act as a barrier against bacteria and environmental pollutants.
In skincare products, ceramides are used to replenish the natural lipids that are lost from exposure to harsh environmental factors, use of drying products, and during in the ageing process.