nothing is really useful.
here is what i tried:
1. dior snow day essense: kind of dry. has little effect.
2. elizabeth arden visible whitening capsule: so so, has some effect in the first month.
3. sekkisei lotion and cream: do brighten the skin. good for oil skin but too dry for me.
4. YSL spot corrector: in use, haven't seen any effect by now.
5. shiseido uv white: oily and no use on spots at all.