A Complete Guide to the Best Olaplex Products — Including Those on Sale For Prime Day

Olaplex No. 3 Hair Perfector ($24, originally $30)

Easily the most popular product in the brand's entire lineup, the Olaplex No. 3 Hair Perfector is so effective that even a few of our own editors have sang its praises; read through our review of the Olaplex Hair Perfector No. 3 for further proof. It uses a special bond-building technology to repair damaged or color-treated hair. It shouldn't be used as a conditioner but rather as an intensive mask for anyone with severely damaged hair from chemical treatments. To get the best results, you should apply it to the hair at least twice a week before following it with your shampoo and conditioner.