Thanks to things like stress, pollution, heat styling, colouring and over-washing, hair damage is pretty inevitable. It often manifests in dryness, split ends, frizz and eventually breakage. By that point, you've probably already tried numerous oils, serums, masks and anti-breakage shampoos in a bid to restore vitality to your lifeless lengths. It goes without saying that your hair routine would be so much easier if there were one single treatment that could do all of that, plus impart a glossy shine, deep hydration and volume. Enter: Hair Filler.