Nioxin System 4 Scalp & Hair Leave-In Treatment for Coloured Treated Hair with Progressed Thinning (100ml) is a volumising leave-in treatment for use on colour-treated hair suffering from progressed thinning and forms the final step in a three-part Nioxin regimen.

Professionally formulated with Nicotinate to strengthen the hair and increase resilience, this treatment enhances the texture and fullness of each hair strand, effectively creating a thicker-looking appearance.

Key Benefits:

• Amplifies hair texture.
• Volumising leave-on scalp treatment for colour-treated hair with progressed thinning.
• Protects against hair breakage.
• Increases volume of each hair strand.
• Contains Nicotinate.
• Best results achieved when using all 3 steps together.