Sytstem 4 was developed especially for fine, chemically treated hair with visibly decreasing hair density. A three-part system that cleans and cares for the scalp and hair in an optimal way.
The Nioxin Scalp Treatment 4 helps to revitalize the scalp. Ideal for fine hair with normal to low hair density.
Shake well and then distribute evenly over the scalp. Do not rinse.
Temporary redness may occur.