Just bought it yesterday. Costs hell of a lot (22,00€/200mL). But works like magic. I mean this has to be the best conditioner/styling product in the market.
I haven’t tried the thickening lotion, but I’ve tried the Fiber and the Texture which is a thickening texture spray, and they are two of my favorite hair products.
They are expensive, but they last a long time especially the Fiber.
American Crew Thickening shampoo and conditioner are excellent too. I cant use the thickening lotion because I have blonde streaks dyed in my hair and lotions and gel darken them too much. I agree Fibre is excellent.
I just bought today from my local mall a can of Fiber. I like it also, it really thickens hair well and it doesn`t make your hair hard as a helmet as most of the sprays do. It is a bit expensive (23,50€), but I do think that it`s worth it.