L'OREAL PROFESSIONNEL SERIE EXPERT SERIOXYL DENSIFYING SHAMPOO Purifier & Bodifier for Thinning Hair Size: 300ml / 10.1fl.oz. L'Oreal Professionnel Serioxyl Shampoo is a dual-action cleanser designed to purify the scalp and densify hair. It gently yet deeply cleanses the scalp eliminating pollutants, micro-cracks, and sebum buildup that can clog hair follicles and inhibit hair growth. This hypoallergenic gel-like formula, free of silicones and alcohol, thickens fine hair by creating a fuller appearance and increases volume by 22% after first use. L'Oreal Serioxyl Advanced Densifying Shampoo is enriched with Magnesium that regulates calcium movement while purifying hair roots from buildup, and Polysorbate 21 that delivers soothing and strengthening properties to hair and scalp. This thickening shampoo plumps fine, limp hair, leaves the scalp with a clean, refreshing feeling, and prepares it for possible following treatment such as Serioxyl Advanced Density Activator.