Nioxin 3-Part System 1 for natural hair with light thinning is a targeted scalp therapy and thickening hair conditioner. This 1000-ml formula cleanses, optimizes, and treats the scalp while thickening the hair for a fuller, healthier appearance. As part of a comprehensive system, it helps maintain hair density and vitality. Ideal for those looking to improve hair resilience and scalp health, this conditioner provides nourishing care without weighing the hair down.