ORA Electric Microneedle Derma Pen System.

Thank you for reaching out to us. In answer to your question you should be able to get 3-4 uses out of each Tip, make sure you clean with alcohol wipes after each use. And yes we do sell the replacement sets. Electric Roller Replacement Needle Heads Set I hope this helps, have a nice day !Cyndee Dermstore Esthetician