Nioxin System 1 Three Part Loyalty Kit is the ultimate haircare set for natural hair experiencing light thinning. In need of an extra boost of volume, this set has been created to add thickness to hair for fuller looking locks, including all you need to get started on your journey towards thicker hair. Including a shampoo, conditioner and leave in treatment, this set combines professional quality haircare with scientific innovations to deliver real results for thickness and scalp health.