Pogonotomia

Pogonotomia is the art of shaving, from the Greek words pogos "beard" and "témno", to cut.

In 1770 French barber Jean-Jacques Perret published a treatise called The Art of Learning to Shave Oneself (La Pogonotomie), or Pogonotomia, a booklet detailing his observations on shaving. It also proposed the first safety razor. In 1762 he developed an extremely sharp razor meant to cut as much hair as possible as he had noticed that every time the blade would not cut the hair completely or at least as much as possible. Perret's razor was later called the cut-throat razor.