Nioxin Diameter System 2 Scalp & Hair Treatment (Natural Hair, Progressed Thinning) 200ml

Nioxin Diameter System 2 Scalp & Hair Treatment is the final step in the 3D Care System Kit 2, purpose-built for natural hair with progressed thinning. This lightweight, leave-in treatment targets thinning areas to help hair look thicker, fuller, and healthier with a natural shine.

What makes it unique is the Scalp Access Delivery 2.0 formula, enhanced with UV-protection ingredients. It delivers targeted nutrients directly where thinning occurs while shielding the scalp from sun exposure that can compromise moisture and resilience. This isn’t just a feel-good finish—it's a precise, science-backed step that complements the entire Diameter System for real, noticeable improvement over time.

How it works with your routine — as Step 3 of the Diameter System Kit 2, this treatment collaborates with the accompanying shampoo and conditioner to nourish the scalp and support strand strength. The result is a more resilient basis for your hair, balanced moisture, and a visibly voluminous, shinier appearance without weighing down fine strands.

• Targets thinning areas to help strands look thicker and fuller.
• Supports scalp resilience and maintains moisture balance for natural hair with progressed thinning.
• UV protection helps safeguard the scalp during daily sun exposure.
• No rinse required—simply apply and go, saving time in your routine.
• Optimized for continuous use with Nioxin’s Diameter System 2 shampoo and conditioner for a cohesive care experience.

Who should use this product? It’s ideal for individuals with natural hair experiencing progressed thinning who want a dedicated, easy-to-use scalp treatment that enhances fullness, adds shine, and supports lasting moisture without adding extra steps or residue.

Real-world outcomes you can expect with regular use include improved hair resilience, better moisture balance, and a more voluminous look that elevates natural shine. This is hair care that works behind the scenes to support healthier-looking hair day after day.

Usage reminder — shake well before applying and distribute evenly across the entire scalp. No rinsing is needed, making it a seamless step to incorporate into your daily regimen.