La Roche-Posay Effaclar H Iso-Biome is an ultra-soothing hydrating moisturizer designed for sensitive, blemish-prone skin that has been weakened by drying treatments. Using microbiome science, it provides long-lasting hydration while helping to reduce imperfections and marks. This dermatologically-tested product contains La Roche-Posay Thermal Spring Water and is specifically formulated for oily skin that has been made fragile by drying acne treatments. The non-comedogenic formula includes key ingredients like niacinamide to reduce redness and restore skin comfort. It has been tested on skin undergoing drying treatments and features a non-greasy, ultra-fine texture that helps maintain the skin's microbiome balance.