If there’s a bubble under your bandage, there are a few options. If you have additional Saniderm on hand, you can gently pierce the bubble and then cover the hole with an additional piece of Saniderm. Or, you can attempt to gently push the bubble out by gliding it to an edge of the bandage. If the seal of the bandage breaks in the process, you’ll need to cover it with another piece of Saniderm to prevent bacteria from entering the bandage. If you don’t have additional Saniderm bandages, it may be best to leave the bubble alone. However, if the bubble pops and you are without Saniderm, you’ll have to remove the bandage and heal your tattoo without Saniderm.