20 10-2-4
17:57
According to the individual! One of my classmates washed her face with milk, and she said it would be effective in a week, and it was obvious! The key is personal absorption. You can buy a whitening mask from herborist, which is very useful. Recommended in magazines. I used it for less than a month, and it was obviously white. I will apply it every other day. I suggest that you do a good job of hydrating when using this mask, and your skin will be dry after a long time!