The ESPA Tri-Activeâ„¢ Resilience SOS Skin Clearing Serum is designed to rebalance & purify your skin. Targeting stressed skin that has been exposed to daily aggressors, the hydrating serum works to improve the look of blemishes & imperfections. The lightweight serum utilises azelaic acid to help brighten dull skin, while resisiting irritation. A biome balancing marine complex & noni phyto molecules boost hydration & help to reduce the appearance of redness. The serum supports your skin's natural barrier to minimise the risk of future flare-ups. Soothing & clarifying, it promotes a clear & calm complexion.