“I believed all the "biomimetic" hype to be incredibly disappointed. This mask is nothing more than a leave in conditioner. It shockingly left my hair more brittle than ever. While it's good not having to rinse it out, it did not condition my hair, neither did it repair it. I had to stop using it after 3 times if I wanted to save my hair and revert back to Olaplex. I read on Facebook other women had experienced the same issue, where they noticed their hair becoming so brittle and falling off even. It's also ridicolously expensive for what it does (very little in my case). I'd recommend buying only one or two small sized ones to see how it actually works on your hair.”