What size clipper blade should I use?

The size of the clipper blade you should use depends on the desired length of the haircut. For a close trim, a #0 or #1 blade is often used, while a #3 or #4 blade is suitable for a longer, more blended look. If you're unsure, consider starting with a longer blade and gradually using shorter ones until you achieve your desired length. Always consult the clipper's guide for specific recommendations based on hair type and style.