Nioxin System 4 Scalp + Hair Shampoo is a scalp-targeted cleansing shampoo designed to remove buildup while supporting fuller-looking hair. It offers a lathering, medium-weight texture that rinses clean without heavy residue. Suited for those with thinning-prone hair and anyone seeking a clarifying routine, available in variants to address different scalp needs.
Ingredient Safety
No risk2
Low risk33
Moderate risk7