Nioxin System 1 Scalp + Hair Thickening Serum is a targeted treatment designed to promote thicker, fuller-looking hair. This 100 ml serum is formulated for individuals with fine or thinning hair and enhances scalp health as well as hair density. As part of the Nioxin System 1 range, it creates an optimal environment for hair growth. Lightweight and easy to apply, it absorbs quickly without leaving any residue. Ideal for daily use, this serum supports the natural thickness and vitality of hair. Perfect for anyone seeking a solution to improve the appearance of their hair and the condition of their scalp.