On Sun 2/7, the proceeds of all haircut sales at Art + Science Salon‘s three locations will go to Little by Little, a nonprofit organization that carries out health care and nutrition programs, sustainability initiatives, and other projects in Haiti. The locations and hours are 1971 N. Halsted, 10 AM-5 PM (312-787-4247); 1552 N. Milwaukee, 9 AM-6 PM (773-227-4247); and 811 Church in Evanston, 9 AM-6 PM (847-864-4247).