SOS Booster Instant Hydrating Serum 50 ml Oil-Free Hydration, Suitable for all skin type ( sensitive friendly ) Meet our Featherlight Oil-Free SOS Booster Serum with Hibischa™. Our fast-absorbing formula, rich in organic acids and vitamins, targets signs of tired skin. The potent soothing blend of Polyglutamic acid and micro-molecular hyaluronic acid strengthens the skin's barrier with instant hydration, while Peumus Boldus Leaf Extract balances oil and minimizes pores. Enjoy a smooth and clear complexion with no sticky residue. Fragrance-free and essential oil-free, it's also suitable for even the most sensitive skin types.