This stuff is awesome. I've tried a few quick dry sprays and this one seems to work the best out of all of them. Definitely remember to shake before applying. You can let it sit for up to 4 minutes, but I often find you don't need to wait that long for it to start working. You can just wait a few seconds and start blow drying if you really need to rush it. It smells nice but doesn't seem to leave a fragrance or residue