New to the market this year, The Hair Boss The Double Mask (£13, originally £20) is a dual-phase operation, and it means business. The first mask (bond repair) contains hydrolysed keratin, which increases moisture retention and reduces breakage, and the second mask (moisture hit) contains hyaluronic acid, a well-known skin-care ingredient, which gives your hair (as the name suggests) a moisture hit. Hair looks shiny, vibrant, and healthy after just one use.