ya wanna know something weird ? the birthmark on my lip, i constantly use lipbalm with and Spf in it even if i am inside. i KNOW it gets sun burned. But my cheek ? it feels like it never gets sunburned but my nose and forehead will. despite scars on my cheek i got skin cancer on a scar on my NOSE instead.
but i say always use caution whether you have a birthmark or not. as much as i hate to hide these blonde locks, i wear my hat almost every time i go out now. helps keep the hair outta my eyes anyway