Genetic engineering will enable the human genotype to be altered in certain parts of the adult body. With genetic engineering, hair coloring, manicures, and pedicures will become simple and affordable. The effects will not fade after a month. They will last forever—or until your next visit to the salon for another new look. Tattoos will appear and disappear at the owner’s command, controlled via a neural interface. Glowing tattoos using phosphoric cells will be in vogue, on a par with beautiful clothes. They will become a fashion statement. A new kind of bling that is quite literally skin deep. People will change their image more often, and far more easily.