Thanks for writing to us.
The dark colored spots on the cheek are likely to be due to melasma- an excessive pigmentation in the area. Improper diet, excessive exposure to sun, hormonal
changes do affect the pigmentation. You need to use a good sun screen over the area to reduce the pigmentation.
I hope this information has been both informative and helpful for you. You can consult me again directly through my profile URL http://bit.ly/Dr-Praveen-Tayal
Dr. Praveen Tayal