Peach fuzz around your cheeks & neckline can make your beard look scruffy and may exaggerate beard patchiness. By getting rid of this area of sparse hair you create a margin of dense hair that makes your beard look thicker & neater - as if you've just stepped out of a barber shop.
Milkman used to recommend doing this freehand but now we've found a solution that will give reliable & accurate results every time. Their "Beardrometer" Beard Shaper is compatible with razors & electric trimmers. It can be used to produce gorgeous natural looking beard lines quickly. It also comes with 2 combs with different gauges to help guide your cutting, plus a brush for cleaning your trimmer afterwards.