Overnight Scalp Barrier Serum with Triple Balancing Action helps to strengthen the natural skin barrier function, for improved scalp health. Powered by Aloe Vera and AHA's, Philip Kingsley's fast-absorbing formula features a Triple Balancing Action, working to help lock-in moisture, decrease sebum levels and balance the scalp's microflora. Helps to protect and strengthen while you sleep. Suitable for all scalps. Philip Kingsley’s Overnight Scalp Barrier Serum with Triple Balancing Action is formulated to nourish the scalp’s natural barrier. The fast-absorbing formula is applied as drops to sections of the scalp, working to lock in moisture and minimise excess oil.Powered by a Triple Balancing Action alongside aloe vera and AHA’s, the serum gently exfoliates and clarifies, while delivering a soothing sensation. The scalp serum is designed to be used overnight while you sleep and is suitable for all scalp types.