Nioxin’s Cleanser/Shampoo System 3 For Natural Hair With Light Thinning Is The First Step Of A Three Part Nioxin Regimen, Specially Formulated To Strengthen The Hair And Amplify Hair Structure. It Prepares Hair And Scalp For A Complete Hair Thickening Treatment With Nioxin’s Three Part System 3. This Professional Derma-purifying Cleanser Shampoo Removes Dirt, Excessive Oil And Other Environmental Residues From The Scalp And Hair.