For hair that’s both coloured and definitely thinning, there’s the Nioxin System 4 Trio. This three-pack comes with a full-size shampoo, conditioner and leave-in thickening spray. Fuller hair awaits. 
Nioxin System 3 trio contains:
 
Nioxin System 4 Cleanser Shampoo 300ml
A gentle, restorative shampoo, designed to care for coloured hair which has noticeably thinned. 
Nioxin System 4 Scalp Therapy Revitalising Conditioner 300ml 
A densifying conditioner tailor-made for coloured hair with progressed thinning.
Nioxin System 4 Scalp and Hair Treatment 100ml 
A leave-in conditioning spray to care for the hair and scalp. Hair looks and feels thicker, stand by strand.