Edges refer to the hair around the hairline including the baby hairs which are sometimes styled into elaborate designs
Some hairstyles can lead to edges breaking off, otherwise known as traction alopecia however hair loss around the hairline can also be caused by hormonal or genetic reasons.
I would like to source the definition but I’m not seeing an author or date published
Those details are at the top of the post: Alma Ruddock · May 21, 2017