Bi
Bifida Ferment Lysate
Bifida Ferment LysateSoothing
A fermented ingredient from a gut bacterium. Its evidence on skin is a single company-run trial: less stinging in reactive skin.
What it does
It’s a fermented ingredient from a gut bacterium, Bifidobacterium. Its evidence on skin is a single company-run trial, which is thin. The trial doesn’t say if its extract is the same one sold under this name.
The evidence, graded
strongGuéniche et al. (2010), L’Oréal Research: 66 women with reactive skin used a cream with 10% Bifidobacterium longum extract or a control cream for two months, in a randomized, double-blind, placebo-controlled trial. Skin sensitivity fell significantly, more tape strippings were needed to disrupt the skin barrier, and skin dryness decreased after 29 days.Guéniche 2010 · Experimental Dermatology ↗
Graded per the methodology: strong · moderate · emerging · expert consensus. A weak source on a strong claim gets the weaker label.
Pairs worth knowing
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