Marvel-Mini green is a hand held device that employs light therapy technology: a non-invasive, low-level, non-thermal light energy that activates skin cells. The device uses different light wavelengths to address specific skin problem. The Marvel-Mini has been designed for individuals who want to manage their own treatments and touch ups at home or while traveling. According to a study that was published in the Journal of Evolution and Human Behavior in October 2006, "wrinkles are not the only cue the human eye looks for to evaluate age. Facial skin color distribution or tone can add 10-12 years to a woman's perceived age." "Faces with more even skin tone were judged to be younger". The properties of green light best benefit those seeking to reduce hyper-pigmentation and sun damage. LEDs emitting green light penetrate into the basal layer of the dermis and target the melanocytes.