The SOS Serum with Organic Peony provides immediate soothing sensation for sensitive scalp. Its physiological pH formula restores the scalp’s natural balance.We select Paeonia lactiflora Pall. which is traditionally used for its soothing and comforting properties.Easy to use, this non-greasy, non-sticky serum comforts the scalp for 24-hours. Use it throughout the day, wherever you are thanks to its convenient pocket size. Scalp is left moisturised, protected, and soothed.