An important step in our proprietary sensitive biotic system, this fast-absorbing super-hydrating serum restores skin, for a calm, balanced complexion. Our silky, light-weight formulation aids irritated & damaged skin with a blend of nutrient-rich Prebiotics and Fermented Ginseng Root-derived Probiotics to help promote a diverse microbiome environment and strengthen skin's barrier through free-radical neutralizing Cica. This probiotic serum is gentle on sensitive skin and locks in moisture with its active ingredient Niacinamide, which prevents moisture from leaving the skin, helping to improve sensations of dryness and irritation.