Brown Spot on the Cheek
I’m going to assume that you’ve had your doctor look at this to make sure it isn’t a skin cancer! Did your doctor try freezing it very lightly (1-2 seconds) with liquid nitrogen? Sometimes if your doctor can get it to peel a bit then the Epiquinmicro or other prescription hydroquinone 4% cream will penetrate a bit better. I’m also assuming you are sunscreening your face every morning with a sunscreen with zinc 5-10% or mexoryl 3% to block UVA as well as UVB.
If the above isn’t effective, you’ll need a laser. I would recommend an IPL device or a Q-switched YAG done through a dermatologist’s office so it will be powerful enough. Most of the salon IPL’s are underpowered. Don’t waste your money!