Nioxin Diameter System 3 Scalp & Hair Treatment (Colored Hair, Light Thinning, Color Safe) 200ml

Designed for colored hair with light thinning, Nioxin Diameter System 3 Scalp & Hair Treatment delivers thicker-looking, fuller hair without washing away the color you love.

Key Features

• Step 3 of the 3D Care System Kit for targeted thinning concerns
• Specially designed for colored hair with light thinning
• Transactive Delivery System 2.0 to support thicker-looking hair
• Increases the fullness of each hair strand
• Hair appears thicker and denser-looking with vibrant color
• Color-safe formula that protects treated color
• No rinse—shake well, apply evenly to the scalp, and go about your day
• Size: 200 ml for convenient long-term use

Performance / Benefits

This treatment targets thinning at the scalp to deliver an appearance of fuller, more voluminous hair. By supporting each strand with a color-safe formula, it helps maintain vibrant color while creating a denser look. The no-rinse application makes it quick and easy to integrate into your routine—simply shake, apply to the entire scalp, and enjoy lasting fullness without washing out your color.