SEBMAN THE BOSS thickening shampoo 250 ml SEBMAN THE BOSS thickening shampoo 250 ml is a professional salon-grade shampoo that is specially formulated to help strengthen, thicken and nourish hair. It is enriched with Pro-Vitamin B5, natural oils and extracts that help to add volume and body to the hair, while cleansing and hydrating the scalp. It is suitable for all hair types and is safe for color-treated hair. It is free of parabens, sulfates and other harsh chemicals.