I love SKII foundations and have been using signs compact for a while. When I went overseas last time I saw their whitening range and decided to give it a go.
I have paid about AUD $75 for a 30ml bottle. Its dear but not overly ridiculous like the new spray on one they just released (have not tried that one as it doesnt appeal to me). The only problem is that when their called 'whitening' range, to me its practically they give a lighter shade in the foundation so your face look 'whiter'. So what i did, is to pick a shade darker than what i normally wear in the 'whitening' range to make it look natural on my skin (confusing i know).
but i love it, it look so natural and flawless.