NIOXIN System 1 Leave in Treatment Scalp + Hair Thickening 3.3 fl ozNioxin Pro Clinical's System Kit 1 is designed for natural, untreated hair with light thinning. Clinically and dermatologically tested, this nourishing and protective leave on treatment strengthens each strand from within, resulting in thicker, fuller hair. Thickens the hair: Nioxin System Kit 1 is clinically designed to add thickness and fullness to natural hair with light thinning, with visible results in just 30 days. Supports scalp health: The

apply to wet hair from mid-length to ends and massage in for 30 seconds until hair feels soft and smooth

deeply strengthening and repair

This mist strengthens hair

Protects against chlorine and heat styling

PPG-12 Butyl Ether

Sodium Acetate

rinse thoroughly

for up to 7 weeks color protection with regular use

A futuristic foam that bulks up fine

Scalp friendly formula helps balance sebum and supports scalp health overtime

Intensively strengthens and repairs for long-lasting smoothness and manageability

Magnesium Sulfate