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Nanoscale Cosmetics Nanotechnology means big business to the beauty industry—but are the product formulations safe? Here's what you need to know to join the conversation. 80 DAYSPA | FEBRUARY 2013 The number of products using nanotechnology has soared in the past few years, yet consumer knowledge about it has actually decreased. Only 5% of those polled by the Project on Emerging Technology in 2012 claimed to have "heard a lot" about nanotechnology, down from 10% in 2006, when DAYSPA published its first article on the subject ("The Nano Revolution," February). Although nanotechnology is now being used in everything from electronics to pesticides, many existing products containing nanomaterials serve the biomedical and personal care industries. They range from gold nanoshells that target melanoma tumor cells to nanocrystal eye shadows that lend eyelids a hologram-esque effect. © LAGUNA DESIGN/CORBIS By Linda W. Lewis