Nioxin System 4 Scalp + Hair Thickening Shampoo for Colored, Dry, & Damaged Hair with Progressed Thinning | Maintain Vibrant Color | Cleanse, Nourish & Boost Hair Density with Niacinamide & Biotin

Customers find this shampoo effective at retaining hair during washing and preventing loss, while also making fine hair look fuller and adding shine. The product receives positive feedback for its quality, pleasant scent, and soft feel, with one customer noting it doesn’t weigh hair down. Opinions about dryness are mixed, with some saying it makes hair feel perfect while others find it extremely drying. Customers consider it good value for money.

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