System 1 Scalp Therapy Revitalizing Conditioner is specifically formulated to address the needs of fine, natural, and slightly thinning hair. This lightweight conditioner helps to moisturize and provide resilience, leaving the hair smoother and thicker-looking. It is an essential part of the Nioxin 3-part system, designed to optimize the hair environment for thicker, fuller-looking hair. Use it after cleansing with the System 1 Cleanser to refresh the scalp and condition the hair shaft.