never heard of it, but i guess some shampoos can coat the hair make the shafts wider with the coat, kind of like TOPIK. I doubt there are any clinical studies on cosmetics. unless a bunch of people rate it here, you may must have to go off some reviews elsewhere or spend a little and find out. maybe use regular shampoo on one side and cat walk on the other did. sounds like they are calling the top central front to back "path" the cat walk.
I doubt you can notice much difference unless you have many hairs, and they are just fine.
