Treatments for Pregnancy Mask?

I am an Asian with a fair complexion. I used to have very good skin. But during my 2nd pregnancy, I developed the pregnancy mask. I have many light brown spots on my cheek. It's been one and a half year now, and still it did not go away.

I tried Clarin's fade serum, did not work. The Ambi fade cream actually seems to work a little bit and gives me a more even skin tone. But, they are not completely gone. What are other options, how about V-beam or any other more aggressive options? Thanks.