A Look at Lipids: Profiles Across Ethnicity and Age, A Review April 30, 2021 Contact Author Apostolos Pappas, Ph.D., Rutgers University, New Brunswick, NJ USA and Nogra Pharm, Dublin
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Sponsored Adapted with permission from a presentation given during the 2020 Anti-ageing Conference.
Skin lipids, including those of both sebaceous and keratinocyte origin, cover the surface of skin. Their apparent composition varies and is subject to the chosen method of sampling.
Lipids produced by the epidermal cells are a mixture of long chain ceramides, free fatty acids and cholesterol. They represent a minor fraction of the total extractable surface lipids on areas rich in sebaceous glands. Lipids of epidermal origin seal the stratified corneocytes on the stratum corneum in a relationship similarly to the “mortar” in the brick-and-mortar skin structure model.