I'm afraid this is only available in Asia...but would like to share with you gals...this is released in Hong Kong last month and I bought a trial bottle at once. I'm so eager to try this cos it contains Arbutin powder & Vitamin C derivative. The Arbutin powder is stored separately inside the cap and you have to push it into the bottle so as to mix it with the Vitamin C liquid. After I used up the small bottle (6ml) my freckles did lighten so I bought a full set with 4x 6ml bottles. As the name implies, it takes 28 days to see the result and I do see the whitening effect on my face after finishing 3 bottles, and my skin is now more smooth, I like this serum very much, and it's really cheap - about USD19 for a set of 4. I think I'll keep on using this at least for the summer!