For Black women, one of our most frustrating hair issues is figuring out how to get our hair to grow to Melanie Fiona-esque lengths. No worries — we went straight to the top for answers! Here, Amoy Couture Hair Salon and product line owner Amoy Pitters (her clients include Joy Bryant, Ciara and Nia Long) shares her top tips for going from short strands to long, glossy locks, the healthy way…