Kérastase Specifique Masquargil is an in-salon treatment that consists of a scalp diagnosis and three step ritual. It begins with the identification of a client’s scalp concern with a diagnostic treatment. Impurities are then removed from the scalp with Spécifique Masquargil, a salon-only clay mask that unclogs pores and eliminates oil, sweat and polluting particles. Finally, Spécifique Bain, Spécifique Masque Hydra-Apaisant and one of three Spécifique Cures (if required) is applied.