You don’t want to hear this but, YOU CAN’T. If anyone says you can run like a rabbit. They will take your money and ruin your tattoo. This is why people should educate themselves BEFORE they get a tattoo.
No real tattooist would tell you it's ok to submerge your new tattoo in pool chlorine. Did he/she happen to be working from a kitchen table?
Only time will tell how it plays out.