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Published in H&PC Today
in January-February 2020, p. 54 - 55

Authors P. Rouaud-Tinguely, E. Aymard, C. Grimaldi and B. Closs

Postbiotics are bioactive metabolites produced by “good bacteria” such as lactobacilli (i.e. probiotics). In the gut, lactobacillus-produced postbiotics favor the maintenance of the microbiota, improve epithelial cohesion and activate host cells growth. As gut and skin share many characteristics, SILAB hypothesizes that postbiotics can bring beneficial effects when applied to the skin. Hence, its experts in microbiology and biotechnologies selected Lactobacillus (L.) arizonensis, a probiotic strain of plant origin, and reproduced its natural environment to bioguide its postbiotics production. Thanks to this innovative approach, the metabolic power of L. arizonensis allowed the specific bioconversion of jojoba into postbiotics composed of cyclic polyols. Industrial-scale culture of this lactobacillus has yielded a supernatant enriched in postbiotics with proven efficacy on dry skin.