Nioxin Diameter System 1 Scalp & Hair Treatment is a targeted solution for natural hair with light thinning. As Step 3 of the 3D Care System Kit 1, it uses a Transactive Delivery System to help deliver thicker-looking hair and a healthy shine from the scalp to the ends.

This treatment strengthens hair, protects against breakage, and reduces hair loss due to breakage, giving you a visibly fuller appearance and smoother, more resilient strands. Designed specifically for natural hair in the early stages of thinning, it fits seamlessly into daily regimens without weighing hair down.

• Step 3 of the 3D Care System Kit 1
• Designed for natural hair with light thinning
• Transactive Delivery System for thicker-looking hair
• Strengthens hair and protects against breakage
• Reduces hair loss due to breakage
• Unveils denser-looking hair with healthy shine
• No rinse formula; shake well before use and apply evenly to the scalp

Ideal for those seeking a practical, no-fuss scalp treatment that supports thinning hair without extra steps.
Ready to see denser-looking hair? Add to cart and start your routine with Nioxin Diameter System 1 today.