 [ Symptoms ] vape ranks my dad smoking from his 18 years old and few days ago i bought some e cigarette for him but it seems that he is not like it very much anyone know vape ranks many thanks [ Disease ] hi as far as i know its hard to increase eumelanin and simultaneously decrease pheomelanin as the metabolic cycles are related to each other you can consult a dermatologist  endocrinologist if there are any recent advances in such treatment modalities thanks