Delmaine Donson Whether you’ve got acne or sun damage, some skin concerns don’t go away quietly—many leave dark spots behind.

The instructions say to pump it on the back of your hand and mix with your finger until you see it turn a color that you think will match your skin tone. But right off the bat, it's not doing ...

“Dark spots occur when the skin produces excess melanin, the natural brown pigment that gives our skin color,” says board-certified dermatologist Dr. Michele Green. “The exact reason why ...