Retain moisture balance and improve hairs resilience with Nioxin 3-part System 4 Scalp Therapy Revitalising Conditioner for Coloured Hair with Progressed Thinning. Bio-Amp Technology leaves hair thicker and fuller looking. Nioxin 3-part System 4 Scalp Therapy Revitalising Conditioner for Coloured Hair with Progressed Thinning strengthens and moisturises your hair. This professional hair care product uses Bio-Amp Technology to help retain moisture balance and improve hairs resilience. Nioxin\'s lightweight, density protecting conditioner leaves coloured hair with progressed thinning looking fuller and feeling thicker. It is the second step on a 3-part treatment designed to strengthen hair and amplify hair structure. Key Features of Nioxin 3-part System 4 Scalp Therapy Revitalising Conditioner Strengthens and moisturises coloured hair with progressed thinning With Bio-Amp Technology Retains moisture balance Improves hairs resilience Hair is left thicker and fuller-looking Step 2 of a 3-step treatment