How long someone can wear a system and be comfortable or have a sturdy attachment is subjective. There is no right or wrong answer, but to me a month is not very sanitary. ur trappling ur sweat and oil under the glue, so u will not feel it as much as long as the glue stays in tact. that does not mean its very sanitary. Good way to get an irritation or something. Everyone is different.

I cut my own hair, so i dont have to worry about it. U buy a wahl buzzer and do it urself its simple. Or go to a barber or anywhere else.