The Best 4 Hair Clipper Length Ideas. If you want to keep your styling easy without going too short, a. #5 clippers also leave a lot of fullness in the hair, especially if your hair is on the thicker side.

It allows for more styling options and is less severe than. Before starting, ensure your hair is clean, dry, and free of tangles. Web a #4 haircut uses the #4 clipper size, which leaves the hair about 1/2″ long.