Grace Choi was at Harvard Business School when she decided to disrupt the beauty industry. "They charge a huge premium on something that tech provides for free color."color printers are available to everyone, and the ink they have is the same as the ink that makeup companies use in their products. the ink is FDA-approved. This is the Mink printer. It uses regular printer ink. First, find a color you want to print. Use the color picker to copy the hex code of the color you've chosen. paste the hex code into a new document. Print the color just...