These are not the scissors you want to use to teach your children how to cut. So yes they will cut their hair, or their fingers. Thats the only pro. Actually quite frustrating even for an adult. It would be best to just teach them how to properly use an age size scissor that can actually cut paper. The paper will sometimes cut, but most of the time just crumbles in between the blades. Thank goodness these things are cheap. If you have two kiddo, one learning how to cut and one thats younger and like to be a part of everything. Give them this pair. They wont actually cut anything. But at least theyll feel a part. Give your big kid something else.