Bifida Ferment Lysate
Also known as: Probiotic ferment
The "repairs skin while you sleep" ingredient that made Advanced Night Repair the best-selling prestige serum worldwide for 30 years.
What It Does
Deep Dive
Lysate derived from Bifidobacterium species, typically grown on milk substrate. Research suggests topical application enhances barrier function and accelerates recovery from UV damage. The marquee ingredient of Estรฉe Lauder's Advanced Night Repair (ANR) serum since the 1980s. Genuinely evidence-backed, though ANR's branding outpaces the ingredient's literal effect.
Best For
Pairs Well With
Effective Concentration
The hero ingredient of Estรฉe Lauder Advanced Night Repair. Used at 5โ50%.





