Nioxin's Scalp Relief Soothing Scalp Serum is a leave-on treatment that soothes sensitive, dry and itchy scalp, while helping to increase the thickness of each hair strand. Formulated with aloe vera and a clean label fragrance, this serum has a scalp neutral pH. Leave-on treatment for sensitive, dry, and itchy scalp Helps increase hair strand thickness Contains aloe vera Scalp neutral pH Clean label fragrance Ingredients Aqua/Water/Eau, Niacinamide, Glycerin, Parfum/Fragrance, Steareth-20, PEG-40 Hydrogenated Castor Oil, Sodium Benzoate, Benzyl Alcohol, Phenoxyethanol, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Triethanolamine, Isostearyl Alcohol, Acetamide MEA, PEG-23M, Tetrasodium EDTA, Boswellia Serrata Gum, PEG-30 Dipolyhydroxystearate, Trideceth-6, Aloe Barbadensis Leaf Juice, Silica, BHT, Potassium Sorbate, Citric Acid, Sodium Sulfite. Suggested Use For best results, use at least 4 times a week. Apply 10 pumps of the liquid directly to scalp after using SCALP RELIEF Cleanser and Conditioner. Massage gently into the scalp. Do not rinse. Blow-dry and style as usual.