Inclusion Criteria Patient age 18-35 Patient able to understand requirements of the study and risks involved Patient able to sign a consent form  Exclusion Criteria:  Patients Fitzpatrick IV-VI A recent history of vitiligo, melasma, and other disorders of pigmentation with the exception of post inflammatory hyperpigmentation Patients with eczema, psoriasis, and contact dermatitis A known history of photosensitivity disorders A known history of melanoma or non-melanoma skin cancers Those planning on going to the tanning parlors Using any of the photosensitizing medication A woman who is lactating, pregnant, or planning to become pregnant Patient planning on exposing the irradiated or control areas to the sun Patients with organ transplantation, an immunodeficiency disorder or the use of an immunosuppressive drug