Nioxin System 4 Scalp Plus Hair Thickening Shampoo

Nioxin System 4 Scalp Plus Hair Thickening Shampoo is a professionally formulated cleanser that aims to strengthen and add fullness to fine, chemically treated or coloured hair. It suits people with thinning or fragile, treated hair who want to reduce breakage and improve scalp health. At $58 (47% off) and rated 4.7/5 from 217 reviews, the current price looks like a good deal given the large discount and strong customer satisfaction.