PRE-TREAT SHAMPOO in-salon professional Alkaline pH, deep cleansing pre-treat shampoo. It helps open the cuticles to better prepare the hair for smoothing treatments (FILLER HIGH GLOSS SPA, GLASS HAIR LAMINATION, GOODBYE FRIZZ and PERFECT SMOOTh). How to use: apply to wet hair, massage gently and rinse. Rinse eyes immediately if product comes into contact with them.