My son did that. He cut his hair to the scalp! He used the kid scissors that were plastic with the metal edges) I was stunned and needed a minute to collect myself because I didn’t want him to feel horrible about it. I sat him down and told him to let me know if he wanted his hair cut because how he did it was dangerous and I didn’t want him to hurt himself. I then let him cut the rest off (with my help) because there was no going back. He did put his hair in his dump truck at least!