System 4

A clarifying, scalp-targeting shampoo from Nioxin formulated to support thinning hair and improve manageability. The lathering, lightweight texture suits daily use and helps remove buildup without weighing strands down. Suitable for those seeking a salon-style densifying routine; formulation notes include scalp-targeting actives and vegan-friendly claims, with a focus on balancing cleansing and hydration.


Ingredient Safety

No risk2
Low risk57
Moderate risk11

What it does

Benefits

Possible side effects

Highlighted ingredients

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