Ga
Galactomyces Ferment Filtrate
Galactomyces Ferment FiltrateHydrator
Fermented yeast filtrate — the SK-II 'pitera' family. Lightweight humectant essence with mild barrier and antioxidant effects.
What it does
Galactomyces ferment filtrate is what most K-beauty + J-beauty essences are built around. The fermentation process produces a complex of amino acids, vitamins, and organic acids that, in clinical studies, modestly improve hydration and surface evenness. The evidence base is thinner than for niacinamide or vitamin C — most studies are small and brand-funded — but galactomyces remains a defensible humectant + supportive layer.
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.
Also known as
pitera, saccharomycopsis ferment filtrate
Pairs worth knowing
This page is public and indexed on purpose (unlike profiles and drops, which are unlisted) — it’s the citation behind shared ingredient cards, and it should be findable.
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