For natural hair which is noticeably thinning, there’s the Nioxin System 2 Trio. This pack of three products forms a system to care for and nourish thinning hair, while helping it appear fuller. Comes complete with a shampoo, conditioner, and leave-in conditioning spray. 
Nioxin System 2 Trio contains:
 
Nioxin System 2 Cleanser Shampoo 300ml
A deep cleansing shampoo to care for your hair and scalp, and help the rest of the products work. 
Nioxin System 2 Scalp Therapy Revitalising Conditioner 300ml 
A lightweight, caring conditioner to help restore the hair. 
Nioxin System 1 Scalp and Hair Treatment 100ml
A leave-in treatment to refresh your scalp and help your hair appear thicker.