perioral dermatitis
"About a year ago, I developed a white patch close to my mouth (vitiligo) about 1 cm in diameter. I ignored it for a few months hoping that it would go away, but when then I went on holiday to the beach and the strong sun made it bigger and more evident. Moreover, three additional spots appeared on my chin. When I got back I went to dermatologist who said it was vitiligo and prescribed protopic 0.1 (tacrolimus) and within a month the first large spot had gone. I still have the little spots on my chin, but they are getting smaller (it has been 3 months now, but I am still hopeful).
If you have vitiligo on your face and it's not widespread it may work for you too, but do consult a doctor, since the drug is not officially recognised as a cure for vitiligo"