Dermal Diagnosis™ | AOPDermExcel treatment for Dermal Diagnosis Aging. Oily. Pigmentation. Your skin has two important upsides: you have adequate oil (sebum) that provides antioxidant protection, and your resistant skin is not very prone to inflammation. In order to counteract your skins tendency to get an uneven skin tone and wrinkles, you need strong products. Luckily, your skin can usually tolerate these better than sensitive skin types can. Your skin will greatly