Pigmentation around the mouth is usually a contact dermatitis ( allergic reaction to some chemical e.g. In a tooth paste / cosmetics ) or an underlying hormonal issue ( e.g. Insulin resistance ). It is better to get it examined by a dermatologist and investigate the underlying cause along with treating the visible pigmentation with creams / procedures like chemical peels and lasers.
To understand the best options for you, it’s best to consult a qualified dermatologist. You can visit our website to get a personal treatment plan from a certified dermatologist, all from your phone, without making an appointment or visiting a clinic.