I swear I have tried EVERY oil blotting/matifying gel, cream, spray or powder that's available. I've tried expensive ones (Chanel) and inexpensive ones (Neutrogena). While some are better than others, the Shiseido Mattifying Stick is by far the best of the bunch. With the other products, I'd be happy if I made it to lunch time without the oil breaking through. With this product, I don't notice the first signs of oil until late afternoon.
I also started using their Purenss Matifying Compact at the same time, so not sure if this product is also helping to keep the oil at bay, but I think that the stick is doing most of the oil controlling.
If you have a problem with oily skin and nothing seems to help much, I'd highly recommend giving this a try.