A hair mask is a concentrated formula left on longer than conditioner, so it penetrates the fibre rather than simply coating it. This page holds masks from Shiseido, Shiseido Fino, L'Oréal and TRESemmé, aimed at damaged, coloured, curly and dry hair. The practical difference is contact time and the concentration of nourishing agents: conditioner closes the cuticle in a minute, while a mask needs 5 to 15 minutes to work. Apply to washed hair squeezed free of excess water, from mid-length to ends rather than the roots, once or twice a week rather than daily. Everything here is 100% authentic, with delivery to all wilayas and cash on delivery.