It’s a good thing hair is technically dead, because the myriad abuses we put it through (bleaching, blow-drying, strangling with ponytail elastics) are tantamount to torture. So when my stylist told me about Olaplex Hair Perfector No. 3, I was intrigued. The brand is known for its salon-grade treatments—often an add-on to color services—that work to actually repair broken bonds (aka damage) in the hair. And its much-hyped at-home treatment contains the same active ingredient, developed by two chemistry and materials PhDs.
Naturally, we had to try it out—you know, for science—so I recruited some of my fellow editors to give it a whirl. Spoiler alert: We all had really different results.