The first thing to find out is why you have the darker forehead. Maybe a trip to a dermatologist would help. It could be something that peels could take care of, or it might just be hereditary coloration or something else. Lactic acid peels are best for evening out skin tone - and they're hydrating if you have normal or dry skin. If your skin is oily, though, you might want to try glycolic acid peels, which are better for oily skin types. If none of those work after a few months, hmmmm, then a good foundation is the way to go. JMO