Read so many rave reviews about it so I thought I will give it a try.  I was aware that it only came it one shade and was on the lighter side but I thought perhaps I could get away with it.  I am a Laneige 21 shade so I didnt think it would be too off.  But it was extremely fair, I tried it once and that was it.  So beware, unless you are way fairer than a shade 21, otherwise don't bother.  I can't comment on its claimed functionality cause I wasnt even able to wear it.  Coverage is great though, just one little tap was good enough.