Luseta Tea Tree shampoo with Argan Oil series works to leave the scalp feeling refreshed while locking in moisture and shine into each strand of hair. FEATURES: Sulfate, phosphate, & paraben freeEffectively cleanses and purifies the scalp of impurities. Leaves the scalp and hair feeling refreshed. Works to improve the health of hair to encourage growth.Shampoo pH 5.5 - 6.5Conditioner pH 4.5 - 5.5 KEY INGREDIENTS: Tea Tree Oil: most widely known for its antiseptic properties. Argan Oil: contains high quantities of vitamin E which help promotes hair growth PH BALANCE: PH levels between 5 - 7 are ideal in shampoos and conditioners. The amount of hydrogen in the solution is what determines whether it is acidic or alkaline. Solutions with higher pH levels are harsher on hair and cause the cuticles to open, exposing the interior of hair shafts. Slightly acidic solutions work to close and protect the cuticles and in turn, help to retain moisture in the shaft.