Which term is used for the lipids that form the barrier between corneocytes?

Prepare for the VTCT Level 2 Facial and Skincare Test. Revise with flashcards and multiple choice questions, accompanied by insightful explanations. Ace your assessment with confidence!

The barrier between corneocytes is formed by a layer of intercellular lipids that fills the spaces between the cells, acting like a cement to hold the outer skin layer together and prevent water loss. This lipid matrix is made up of several lipid types, with ceramides, cholesterol, and free fatty acids being the main components. When a question asks for the term used for the lipids that form the barrier, the broad category used is lipids, describing the group of molecules that create this protective barrier. Ceramides, cholesterol, and free fatty acids are individual components of this lipid barrier, not the overall term for the barrier itself. So, recognizing that the barrier is constituted by lipids as a collective group helps you connect the concept to how the stratum corneum maintains its integrity.