Sorry if this is the wrong place for this question... I just didn't know which forum this quite fit in!

I bought the Devacurl Frizz Free Voumizing Foam awhile back and hated it. It was just sitting in my bathroom collecting dust until my husband decided it smelled good and put it in his straight hair. He loves it! It apparently holds and gives him volume (he's a musician, so he cares about these things) like nothing he's ever tried.

Does anyone maybe know what's in there that would be giving him volume or possibly a similar foam/mousse that isn't $25/bottle?