It is "Joico JOIWHIP Mousse"...and your Trade Secret might have been sold out of it because it is so AWESOME! Next time you are in you should ask. I got some just today at my Trade Secret.
I was also browsing the rest of their line and eyeballing the Tigi line but the salesgirl said the JoiWhip is the best for a light feel but great hold. I know I love it and have for quite some time!