Paul Mitchell Tea Tree Scalp Defense Serum is a lightweight, fast-absorbing serum designed to protect your scalp from pollution and environmental stressors. Formulated with a powerful antioxidant botanical blend that including knotweed, kirayat, tea leaf, and bamboo extracts. It helps shield the scalp from damaging free radicals. Suitable for all hair types, this serum leaves no residue and can be used daily or as needed. Ingredients Water/Aqua/Eau, Polysorbate 20, Melaleuca Alternifolia (Tea Tree) Leaf Water, Phyllostachys Pubescens Meristem Cell Lysate, Polygonum Multiflorum Extract, Andrographis Paniculata Extract, Centella Asiatica Extract, Camellia Sinensis Leaf Extract, Phenethyl Alcohol, Acrylates/ C10-30 Alkyl Acrylate Crosspolymer, Pentylene Glycol, Propanediol, Glycerin, Ethylhexylglycerin, Sodium Hydroxide, Phenoxyethanol, Fragrance (Parfum), Menthol, Menthyl Lactate, Lavandula Oil/Extract, Linalool, Linalyl Acetate, Turpentine, Citronellol, Pinene, Geraniol, Coumarin.