Give your hair the extra nutrients it needs to look and feel healthy and young with Hair Perfector No.3. Use this special blend once a week to give your scalp a special boost of protection and nutrition. It not only helps ensure optimal health but also works to pre-treat hair before using colors and dyes. This convenient Olaplex perfector bottle uses a resealable cap that lets you use it in the shower multiple times. It is specially created to be compatible with nearly all types of hair, making it a universally beneficial addition to your hair care regimen.