The Nioxin 3-Part System 4 Scalp Therapy Revitalising Conditioner delivers strengthening benefits to coloured hair. Suitable for those who suffer with progressed thinning, the formula seeks to fortify and moisturise your lengths. BioAmp technology helps to restore hydration while providing hair resilience, thereby resisting snaps and breakage. Incredibly lightweight, the density-protecting conditioner helps to support a fuller-looking mane. It is the second step of a 3-part treatment, designed to reinforce hair structure.