Dermal melasma This type of melasma affects the dermis, which is a deeper layer of skin. Epidermal melasma The most superficial form with hyperpigmentation of the epidermis. Mixed melasma A combination of dermal and epidermal melasma. Centro-facial melasma This is the most common form with spots present at the level of the forehead, nose, cheeks, upper lip and chin. Malar melasma This melasma is limited to the nose and cheeks. Mandibular melasma Characterized by brown spots at the level of the bone of the the lower jaw.