Why should haircutting shears be kept sharp and in good condition?

Sharp, well-maintained shears cut hair cleanly and precisely, which produces better results and is safer and easier to control. Dull or damaged shears can push, fold, or tear the hair, causing split ends, uneven cutting, and extra strain on the cosmetologist's hand. Shears should also be cleaned and disinfected between clients as nonporous tools. Proper tool maintenance supports both quality work and safety. Understanding why sharp implements matter is part of the tools-and-technique content on the exam.