LEDs, if you're not a regular reader here (though you should be) are the miniature lights used in an array of products, from TV remote controls to traffic lights.
In the study, Andrei P. Sommer and Dan Zhu point out that high-intensity visible light has been used in medicine for more than 40 years to speed healing of wounds. That light actually penetrates into the skin, causing changes in the sub-surface tissue. Until now, however, scientists have not known the physicochemical nature of those changes.
LEDs may help reduce skin wrinkles, researches report. Credit: American Chemical Society
They report identifying how the visible light works — by changing the molecular structure of a glue-like layer of water on elastin, the protein that provides elasticity in skin, blood vessels, heart and other body structures. Figuratively speaking, the light strips away those water molecules that are involved in the immobilization of elastin, gradually restoring its elastic function and thus reducing facial wrinkles. "We are justified in believing that our approach can be easily converted to deep body rejuvenation programs," the researchers state.
Article: Andrei P. Sommer and Dan Zhu, 'From Microtornadoes to Facial Rejuvenation: Implication of Interfacial Water Layers', Cryst. Growth Des., 2008, 10.1021/cg8000703