The INKEY List Hyaluronic Acid Hydrating Hair Treatment is a lightweight serum formulated with optimized high and low molecular weight Hyaluronic Acids, which helps to hydrate, reduce frizz and brittleness to improve shine, whilst helping to protect hair from the impact caused by environmental pollution. Hyaluronic acid is a classic ingredient, traditionally known in skincare for its highly hydrating properties. Lack of hydration in the hair can be caused by several factors, including over washing, water temperature being too high, using heated tools without heat protection or humidity. When your hair becomes dry, the hair cuticle is rough and open, causing hair to lose moisture and become frizzy. Who It's For: - All hair types, even those with sensitive skin. Key Ingredients: - 2% RESISTHYAL™ containing optimized high and low molecular weight Hyaluronic Acids, helps to hydrate, reduce frizz and brittleness to improve shine, whilst helping to protect hair from the impact caused by envi