Honestly the best thing Ive found to do with a cotton coat is to keep it short. Ive tried to grow long hair on my Jewels but she would get matts that were painful to her to get out and also she looked unkept unless she had just been groomed. I love a groomed look and have grown to love shorter hair on a yorkie. My groomer does keep a little length on the face so you do have a yorkie look just a short clean body |