Journal · Formulation · 6 min
The five ceramides your barrier already makes.
Healthy stratum corneum holds ceramides at a stoichiometric ratio. Match that ratio in the jar and you support what the skin was already trying to do.
The Biomedical Emporium® formulation desk
7 January 2026
The stratum corneum is not a wall of one material. It is a lipid mortar of ceramides, cholesterol, and free fatty acids at roughly a 3:1:1 physiological ratio. Break the ratio in either direction and water leaves faster than it should.
Five ceramides do most of the load-bearing: NP, AP, EOP, NS and AS. Formulas that publish one ceramide are usually leaning on NP alone, which is the one that reads on tests. Formulas that publish three or more, at the ratio your skin already knows, are the ones that behave on skin the way healthy skin behaves.
The Skin Biotic Cream C is written around that ratio. So is the Barrier Veil approach in the wider line. Read the ingredient list for the letters, not for the word ceramide alone.
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