Trimming the pubic hair properly begins with a good brushing or combing. Brush up first - then out towards your shaft to extend the hair fully. Using the edge of a top-quality Oster T-Finisher, or a Wahl T-Trimmercan help to set an edge and curve above the shaft. It's up to you if you feel the need to 'add an inch' and set the hair edge close to the root - or merely want to trim and shape the bush overall. Then, brush up and back towards your navel, exposing the shaft and root to move in for the few stragglers.