
Dark spots appearing on lips
Over the last several years dark spots have been appearing and staying on my bottomed lip, mostly on one side. I've grown to be insecure about this and as I get older they continue to get worse. I've tried using lip balm with sunscreen & dark spot removal creams, vitamin c lip ointment etc nothings seems to help.
what may be causing this hyperpigmentation? does any one have any advice on how to to get rid of these spots or prevent?