Hairs and hair can be a source of infection and hinder the full display of the surgery area and interfere subsequently with the disinfection of the wound. The latest scientific evidence supports in favour of shaving in cases when hairs in the incision area may interfere with the surgical procedure. Prospective randomized trials suggest that the use of an electric razor (clipper) causes fewer infections than a razor blade because the latter is associated with minor skin injury. Despite limited evidence on the timing of execution of the procedure, if you were to perform trichotomy, this should be done on the same day of the operation.