Argon Oil Shampoo & Conditioner set travel size FEATURES: Sulfate & phosphate free Replenishes hair damaged from heat, chemicals and environmental elements. Adds moisture and shine while protecting against head. Promotes growth of healthy, stronger, softer, and more manageable hair. Shampoo pH 5.5 - 6.5 Conditioner pH 4.5 - 5.5 KEY INGREDIENTS: 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.