Redken describe this as a spray which "illuminates hair with brilliant sheen and a silky feel. Weightless formula gives a light, clean application to all hair types".
I sprayed it in my newly washed hair as I was about to go out the door and the first thing I noticed was the horrible scent. I'm usually not very fussy with scents, not really caring what my hair products smell like but this really was not pleasant at all.
As for the effect of the spray, it really didn't make any difference to my hair whatsoever. There may have been a very slight shine but I don't think I would have noticed except for the fact I was really looking for it.