This condition is known as "melasma." It's also called "chloasma." My mother has this and it is due to an estrogen imbalance. Many women have this either in perimenopause or when they are pregnant or on birth control pills or on hormone replacement (yet ANOTHER reason you should stay away from supplemental hormones!). It is 100% hormonal and not due to nutrition. My mom, age 57, developed this condition when she took the breast cancer drug Tamoxifen to prevent a recurrence. (Tamoxifen blocks estrogen in the breast but acts like estrogen throughout the body, meaning it affects the bones, cholesterol, what not). The melasma slowly disappeared when she went off it 2 years ago. The best solution for melasma is to first STAY OUT OF THE SUN!!! The tiniest bit of a tan will exacerbate this condition like you wouldn't believe!! Secondly, melatonin gets thrown off keal when estrogen levels are chaotic; some (inconclusive) studies have shown melatonin supplements will get rid of this but first ask your doctor. Topically, your best solution will be hydroquinone cream along with retinol and alpha-lipolec acid. These in combination work better than any of them alone. The hydroquinone though is first and foremost the most necessary. Mom's melasma started disappearing when she applied this to her face. Give it a try! Hope this helps.