Require a good daily grooming using a slicker brush.
Rarely seen now but in full coat a topknot is usually tied to keep the hair out of the dog's eyes.
Most owners prefer to have them clipped shorter to make it easier and less time consuming to care for styles and lenght of the coat can vary discuss with the groomer to achieve the look you want that suits your and your dogs lifestyle.
Important to keep the ear passages and area around the eyes clean. Shih-Tzu's have sensitive eyes that need to be kept clean.