Achieving a clean and sharp hairline is the finishing touch that elevates any haircut from ordinary to professional. Whether you’re detailing sideburns, the neckline, or the front hairline, precision matters. In this guide, we’ll show you how to perfect your edging in just 3 minutes using the LILIPRO M12 Barber Hair Trimmer — a professional tool trusted by barbers for its zero-gap deep-tooth T-blade, powerful motor, and ergonomic design.