The stratum corneum is the outer layer of the skin, serving as the primary barrier between the body and the environment.
The extracellular part of this layer, also known as the lipid matrix, represents the 'mortar' of the bricks-and-mortar model, composed of ceramides, cholesterol and free fatty acids.
In this article, Dr Katerina Steventon, Innovation Consultant to the Personal Care Industry, explains why these intercellular areas are so vital to the health of our skin and discusses which topical oils are most effective at maintaining skin lipid matrix health.