I have been taking sunna collagen for nealy 2 weeks now, i add it to my cereal, it has a tinyyy smell but no taste which makes it easy to eat. I have had pain in my left knee for 2 months, , which seems to be getting better so im assuming the collagen is working, too early to say anything about hair and skin though.
Will be buying more as had bought 1 months supply to try out.