I trim my own bangs and will trim my girls' bangs on occasion but for trims we use a beautician. When I had short hair, I fell asleep one time at the beauty shop and the cutter gave me extremely short hair ~ like 1.5 inches on top and almost to my scalp in the back and coming around the sides. I was pissed!!! I didn't go back to her but had to explain to both my DH and my boss, a school principal, why my hair looked like that. It took almost 6 months to grow out enough to be styled into a "normal" looking hair style.