Although doctors recommend that kids under 16 shouldn't ever go on tanning beds, they have no age limit.
The problem is made even worse because tanning sessions are very cheap, so kids can afford them.
Many children don't realise that they are in more danger than adults from the bad effects of sunbeds.
Sunbeds can be used to help some skin problems, but only under doctor's orders.
Some people are having over 100 sessions a year.
The British Photodermatology Group, a group of suntan experts, reckon adults should only have 20 sessions in one year.