MELANOTAN 1 10mg Peptide Pro Melanotic macule. Benign. Dark spot on labia (or lip). Analogous to lentigo simplex. Hyperpigmented basal keratinocytes & dermal melanophages. Slight in single basal melanocytes; NO nests. More info like this in Differential Diagnosis of Pigmented Lesions in the Oral Mucosa: A Clinical Based Overview and Narrative Review Oral malignant melanoma of the lower jawa case report with immunohistochemical investigations ecancer Pigmented Lesions of the Oral Mucosa Pocket Dentistry Does anyone know what this black mark on my lip is? Started last August so it's I've had it nearly a year, was living in Spain at the time for 6 months