. 2022 Jan 20;11(2):121. doi: 10.3390/pathogens11020121

Table 2.

Resuming the cosmetic description of prebiotic and postbiotic ingredients.

Postbiotic (Including Probiotic Fraction or Extract)	Prebiotic
Non-viable ingredients comprised of inactivated microorganisms and/or soluble factors (products or metabolic by-products) released by live or inactivated microorganisms, added to a cosmetic product to achieve a cosmetic benefit at the application site, either directly or via an effect on the existing microbiota. Categories: 1/Ferments, lysates, extracts, filtrates, 2/Non-viable microorganisms (inactivated/heat-killed), 3/Metabolic products/by-products (isolated)	Non-viable ingredients are added to a cosmetic product to be actively used as nutrients by the microbiota of the application site to achieve a cosmetic benefit. Examples: ingredients such as fibers, sugars, minerals, but also complex biological mixtures/extracts, etc.

Postbiotic (Including Probiotic Fraction or Extract)

Prebiotic

Non-viable ingredients comprised of inactivated microorganisms and/or soluble factors (products or metabolic by-products) released by live or inactivated microorganisms, added to a cosmetic product to achieve a cosmetic benefit at the application site, either directly or via an effect on the existing microbiota.
Categories: 1/Ferments, lysates, extracts, filtrates, 2/Non-viable microorganisms (inactivated/heat-killed), 3/Metabolic products/by-products (isolated)

Non-viable ingredients are added to a cosmetic product to be actively used as nutrients by the microbiota of the application site to achieve a cosmetic benefit.
Examples: ingredients such as fibers, sugars, minerals, but also complex biological mixtures/extracts, etc.