Encourage a stronger, healthier scalp with the NIOXIN System 2 Scalp & Hair Treatment for Natural Hair with Progressed Thinning. Designed for those suffering from hair loss, the leave-in scalp treatment features nicotinate, a derivative of niacin, which promotes circulation and stimulates hair growth. The volumising foam works to add body to fine, limp hair for a fuller-looking mane while protecting against breakage. For best results, use this formula as the final step of the triple-stage System 2 Treatment. Suitable for thinning hair.