Thinning hair can be a stressful problem especially if you have very fine, thin hair which is notable for being weak and prone to breakage. Nioxin Cleanser System 1 has been specially designed for thin to normal, natural hair. It amplifies the hair texture, strengthening the hair whilst protecting hair from damage and breakage, leaving scalp refreshed and hair with a natural, radiant and healthy shine. Nioxin System 4 Three Part System Trial Kit - or Colored Hair with Progressed Thinning. Contains:- Nioxin System 4 Cleanser Shampoo 150ml Nioxin System 4 Scalp Therapy Revitalising Conditioner 150ml Nioxin System 4 Scalp and Hair Treatment 40ml BioAmp adds thickness and strength. Glyco-Color Shield Dual protection technology designed to safeguard the scalp skin and preserve hair color. Scalp Protection: Formulated with herbs and botanicals to moisturize and help guard the scalp skin from chemical service residues. Hair Color Protection: Custom-built molecular technology designed to provide CLINICALLY PROVEN color protection and vibrancy. Scalp Access Delivery System helps protect nutrients at they moisturize and energize the scalp and hair combined with SPF 15 scalp protection against UV rays.