Visible Light Study

"The study doctor will shine 2 different light bulbs (one a regular or incandescent bulb and the other an LED light bulb) on 12 different areas of patients skin approximately 6 square centimeters in size (less than 1 square inch or the size of your thumb nail). Each light bulb will be exposed to your skin for approximately 20 - 35 minutes. After exposure, the study doctor will perform skin assessments at 3 time points:~1. Immediately after the light exposure;~2. 30 minutes after light exposure; and~3. 1 hour after light exposure."

"The study doctor will perform the same 4 skin assessments used in Part A at each visit to assess potential changes in your skin: Digital Photography~1. Visual Clinical Assessment~2. Spectroscopy~3. Colorimetry"