You might have a bubble on your three year old lip piercing because the piercing might have been damaged when you exchanged the tongue bar or ring. You might also have a bubble because the tongue is infected.
It would mean the twelve year old has a cartilage piercing, nothing mystical about it, it's just a piercing.
It hurts way more! Industrial piercing is not as straightforward as traditional piercing, it is considerably more painful; The piercing, can take between three months to one year to fully heal.
Any body piercing studio will do the piercing for you but you will need your parents to go and sign the consent forms before you can get it done.
Well I would quit using the cleaner you are using and I would change the jewellery to a captive bead ring (available at any good body piercing studio). Once the ring is in the piercing rotate it under running water while showering and rinse the piercing daily (again in the shower). Don't use anything on the piercing, no cleaners, agents, just lathered and diluted antibacterial liquid soap and rinse with plenty of water daily. Watch hair sprays, conditioners and other hair treatment don't get onto or in the piercing. The bubble you have should start to dry up in about 48~72 hours following these simple instructions.
Never get any piercing with a gun-style piercing machine no matter what. Gun-style piercing machines cause trauma, unnecessary damage, and scar tissue around the piercing that would not happen when proper equipment (a bevel-tip hollow piercing needle) is used.
If the piercing is over a year old you can remove the Monroe piercing for several hours without fear of the piercing healing closed. Prior to a year you are taking a gamble on how your body will respond to the jewellery being out of the piercing.
If the 12 year old has had the piercing for over a year, chances are good it's healed. If it was done by a piercing gun, then it could still be healing.
In general, a minor under 18 cannot legally get a piercing without parental consent in most places. An 18-year-old may not be able to sign for a piercing on behalf of a minor. It is best to check the laws and regulations in your specific location.
Walter Diemer invented bubble gum in the year of 1928
1928 by Walter deimer
It may be possible to get an ear piercing without a parent. However, any other piercing will have to wait until they are 18.