Understanding the intricate changes in hair angle for every part of the scalp is very important in achieving natural results. Before explaining technique for graft placement, we must first comprehend the angles and directions of hair growth that occur as natural patterns across each region of the scalp. Although every person is unique and may have subtle yet distinct hair patterns, there are basic principles to how hair grows on each scalp region that should be understood as a prerequisite to graft placement. There are four distinct areas of the head that hair restoration targets: frontal, temporal, top (midscalp) and vertex (crown), each of which demonstrates its own subtleties in hair-growth pattern.