What is the most helpful method for whitening?

I thought she had pure white skin, but I don't think she did. ㅠㅠ

As I get older, I seem to get more blemishes and my skin is getting darker and darker.

I wonder if the child takes after me? Their skin is dark.

Is it impossible for naturally dark skin to become pure white?

Or is it possible to achieve white skin through cosmetics or various other methods?

I am wondering what the most helpful method is for whitening,

I'm also curious if naturally dark skin can become pure white!