How Estrogen during Pregnancy affects Hair Growth
Every strand of hair inserts in to the scalp and travels to its starting point in the dermis, this starting point is known as the pilosebaceous unit. This unit can exist in three major phases: a resting phase (telogen), growing phase (anagen) and a contracting phase (catagen). Each pilosebaceous unit develops its own rhythmic cycle through these phases that is distinct from the units around it. In an average person, about 15-20% of all the units are in the resting phase. Howe