For children who prefer a short cut, using a buzzer or trimmer is definitely the way to go. A good rule of thumb is the smaller the blade, the shorter the cut, so if you're going for a buzzcut, use a one or a two attachment. If your child prefers to wear their hair a little longer on the top of their head, go for an attachment with a slightly higher number on it.
"Most people have used scissors before so they understand the basic mechanism of how they work," said Michelle. "Buzzers on the other hand are a whole different kind of beast. Attachment guards, blade levels, and hand mechanics all play a part in a successful buzzer cut."
And remember: you can always take more hair off, so if you're unsure about your child's desired length, start with an attachment that has a high number first and work your way down.
However, if you're a total newbie, Michelle suggests proceeding with caution. "If you've never used one before, now is not the time to experiment," she warned. "If it goes wrong, there's no salon to run to in order to get it fixed by a professional!"