Bifidobacterium longum BB536

Bifidobacterium longum BB536 is a specific probiotic strain originally isolated from healthy human infant gut microbiota and developed by Morinaga Milk Industry Co., Ltd. in Japan. This strain is one of the most clinically studied bifidobacteria, and in cosmetic applications it is used as a lysate or ferment to help reinforce the skin's natural microbiome balance, strengthen the skin barrier, and modulate cutaneous immune responses. Formulators choose BB536 specifically for its well-documented strain identity, its ability to reduce skin sensitivity and redness, and the robust body of research supporting its efficacy compared to generic probiotic extracts.