Visible Light Study

Inclusion Criteria:

- Be a healthy volunteer with Fitzpatrick skin types I-VI;

- Agree to abide by the Investigator's guidelines regarding photosensitizing drugs and
photoprotection;

- Be able to understand the requirements of the study, the risks involved, and be able
to sign the informed consent form;

- Agree to follow and undergo all study-related procedures.

Exclusion Criteria:

- Women who are lactating, pregnant, or planning to become pregnant;

- Patients with a recent history of vitiligo, melasma, and other disorders of
pigmentation with the exception of post-inflammatory hyperpigmentation;

- Patients with a known history of photosensitivity disorders;

- Photosensitizing medications may be continued throughout of the study at the
discretion of the investigator ;

- Patients with a known history of melanoma or non-melanoma skin cancers;

- Concomitant use of tanning beds;

- Sun exposure of the irradiated or control areas;

- Patients with serious systemic disease.

- Patients with a known history of hypersensitivity to adhesives including adhesive
tape.