[Elsdebo]

I just repeated what Mothered said sometime ago. The thread was about dark purple dissapearing ink, which can be made visible again with chemicals. Are you using this one?
If you do it repeatedly on the same service point yes you will get in trouble. I can imagine someone working there asking themselves: This is already the second package without a label this month and last month there were 3?!

If you cannot imagine these risks then I think you should not use dissapearing ink often at all.