Some prefer to change a blade after utilizing once or twice, others after few times the majority of expect between 5 to 7 takes. It is inexpensive, quick, and conveniently done at family. The reason is a person's hair texture, rate of growth, and skin sensitivity are not the same the next person. https://kcapa.net/bbs/board.php?bo_table=free&wr_id=2112061