I have never used Shiseido products but I have gone the dermo route...ended up using Accutane which worked for several years but last year, my acne resurfaced with avengence. I tried antibiotics again to no avail...was about to get serious and head back to the doc again when my mom sent me a link like this:
http://www.peoplespharmacy.com/2009/05/17/laxative-licks/
I can't believe it but Milk of Magnesia has been working so WELL for me! $3.50 a bottle for the generic kind, plus I use my current products (apricot scrub to exfoliate and then Cetaphil daily cleanser) and just before I get out of my morning shower, I pour a handful of MoM, apply it to my face and let it sit about a minute of so. I rinse before I get out of the shower, and poof! A MUCH clearer face! Instead of a constant crop of 10+ blemishes, I've ended up with only ONE during my monthly cycle. So cool!
Other folks use it differently too, they let it dry and keep it on over night. If you're willing to try something new, Milk of Magnesia is sooo cheap and even I can't believe how effective it is.