I came across this product in a gossip forum of all places, and it peaked my interest. I’m heavily into hair science and integrity, especially since I’m chemically relaxed (no hydroxide relaxer, I use Phyto) and use heat. I’ve noticed a substantial decline in breakage, as well as a softness to my hair that did not exist with other bond builders like K18 and Olaplex. It fits beautifully into my weekly routine, and is not complicated to use. I spray my hair and let it sit anywhere from 30 minutes to a few hours, and because I’m extra, I use it again after I wash before I apply conditioner. I’ve never been so impressed.