Nioxin Diameter System 3 Scalp & Hair Treatment is specially designed for colored hair with light thinning. This Step 3 product in the 3D Care System Kit 3 uses Transactive Delivery System 2.0 to help you achieve thicker-looking hair while preserving vibrancy in your color. With continued use, you’ll notice added fullness along each strand and a denser overall appearance without heavy buildup. The color-safe formula keeps dyed tones lively, and the no-rinse application makes daily care quick and simple—shake well, apply evenly to the scalp, and go.

• Specifically designed for colored hair with light thinning
• Transactive Delivery System 2.0 delivers thicker-looking hair
• Increases fullness of each strand for a denser appearance
• Color-safe formula preserves vibrant dyed tones
• No rinse needed; easy, quick daily application
• Step 3 of the 3D Care System Kit 3 that complements Steps 1 & 2

This treatment comes in a 200 ml / 6.76 oz bottle and is intended to be used as part of the full kit for best results. Start integrating it into your routine for visible fullness and richer color—add to cart to begin thicker-looking, color-safe hair today.