Redken Chemistry Shot Phase Extreme Deep Treatment is a booster for distressed hair. Formulated with more protein than any Extreme product, the Strength Shot's concentrated dose fortifies chemically distressed hair. Wheat protein and wheat starch help reinforce the internal fibre and protect hair against heat damage. A cationic surfactant targets the most damaged areas to give great surface conditioning without weighing hair down. Must be used with Redken Chemistry System 3.5 pHix pHase. This pH sealer is for chemically distressed hair and must be sprayed over "shot" to lock the specialised ingredients contained in the "shot" onto the hair. It also rebalances the pH level of the hair and helps to seal the cuticle.