Yes, hyaluronic acid is typically known for its skin saving, hydrating properties, but thanks to The Inkey List it's also pretty neat at reducing frizz, brittleness and protecting against pollution, too. That's where the Hyaluronic Acid Hydrating hair treatment comes in. Whipped up with high and low molecular weight hyaluronic acids the lightweight formula is infused with the likes of betaine, panthenol and ResisthyalTM.The Inkey List Hyaluronic Acid Hydrating hair treatmentApplication: Shake well before use. Apply one to two pumps into the palm of your hand, massage hands together and work through wet or dry hair. Apply enough to thinly coat all of your hair. Leave on. Style as usual. Use 1 2 times a week50ml