Nioxin Scalp Therapy System 2 Conditioner 33oz & treatment 1.35oz- 3SET Nioxin Scalp System Therapy 2 is a conditioner designed specifically for noticeably thinning hair. This volumizing scalp conditioner strengthens hair at the roots while simultaneously moisturizing the scalp. Its unique combination of essential oils, special anti-oxidants, and enzymatic complexes helps to suppress DHT and provide that high volume and clean look you desire.