Hello, Sulfate Free Shampoo Base (pH 7, Clear, Foaming) is gentle and clean enough. If you want to add something else can do I have a preliminary formula recommended as follows: Water = 64% Sulfate Free Shampoo Base (pH 7, Clear, Foaming) = 30% Cetrimonium Chloride ( CTAC ) = 2% (Antistatic) Poly-Co...