- To moisturize your skin properly, it is necessary to capture water in your epidermis, to improve the impermeability of your stratum corneum. Hydrabio Serum increases moisture in your skin up to 57% within 15 minutes only, through the patented Aquagenium® complex. It targets the skin’s natural moisturizing abilities. Thanks to an apple seeds extract, the Aquagenium® patent targets water channels; the stratum corneum seems to capture water. Vitamin PP/B3 targets skin cohesion, while a cucumber extract helps to soothe your skin and glycerin moisturizes it.