Bi
Bifida Ferment Lysate
Bifida Ferment LysateSoothing
Bifidobacterium-strain fermentation lysate. Hero ingredient in Estée Lauder's Advanced Night Repair lineage.
What it does
Bifida ferment lysate is the fermentation product of Bifidobacterium, a probiotic strain native to the gut. Topical formulations carry small studies suggesting barrier-recovery support after UV stress. The most famous use is in Estée Lauder's Advanced Night Repair, which made bifida ferment a recognizable ingredient in mid-priced K-beauty and Western dupe-positioned serums.
The evidence, graded
expert consensusThe traditional K-beauty 10-step layering approach (oil cleanser → foam cleanser → toner → essence → serum → ampoule → sheet mask → eye cream → moisturizer → SPF) is fully compatible with Western actives but not necessary for results. Adding more steps does not equal more efficacy.Draelos 2018 · Journal of Cosmetic Dermatology ↗
Graded per the methodology: strong · moderate · emerging · expert consensus. A weak source on a strong claim gets the weaker label.
Pairs worth knowing
Browse all 668 ingredients — grouped by what they do, each with whatever evidence we can cite.
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