Leave-in scalp and strand care for colour-treated hair with progressed thinning. Nioxin System 4 Scalp Treatment is the weightless leave-in step for dry, damaged or colour-treated hair with progressed thinning. It refreshes the scalp and helps increase the look of volume and strand fullness, leaving hair more substantial-looking, manageable and free from heavy residue.

Why you'll love it
Leave-in scalp and strand care for colour-treated hair with progressed thinning.
Designed as a leave-in step for targeted hair and scalp care

How to use: Apply to the scalp and/or hair as directed on the product label. Leave in; do not rinse.