NIOXIN SYSTEM 4 Leave-in Treatment – System 4 for coloured, dry or damaged hair with advanced hair loss

The leave-in treatment from the Nioxin System 4 kit is designed to target advanced hair loss in coloured, dry or damaged hair. It is the final step in the Nioxin 3-step care routine. It provides a refreshing sensation on the scalp, whilst adding thickness and density to the hair. Clinically and dermatologically tested. 

It helps to refresh the scalp and increase the thickness of each strand of hair, giving your hair a denser, fuller appearance. It provides essential nutrients and antioxidants to the scalp, nourishing it and protecting it from damage. This treatment contains ingredients that protect the scalp and hair from UV rays. 

Shake the leave-in treatment well and apply it directly to the entire scalp, paying particular attention to areas of irritation or discomfort. Massage gently and comb through the entire length of the hair. Do not rinse. For best results, use in conjunction with System 4 shampoo and conditioner.

Discover Nioxin, the world’s No. 1 professional brand¹ for thicker, denser and healthier hair².
A pioneer of a revolutionary philosophy: “It all starts with a healthy scalp!”
Thanks to over 35 years of clinical research, Nioxin transforms its scalp expertise into genuine innovations with proven results. Because everyone deserves healthy hair, Nioxin is committed to delivering visible results! 30 days to see a difference? Nioxin supports you with unique kits and expert haircare solutions for thicker, denser, healthier hair in as little as 30 DAYS³. Clinically proven.

¹The No. 1 professional brand, global sales.
²According to data from Kline & Company. ​
³Based on a survey conducted by SIRS in the United States in 2016 amongst 230 users concerned about hair loss (each of whom tested one Nioxin routine).