I print my labels...using a good HP printer. let the label set and 'cure' for 24 hours then heat set it; cure it for another 24 hours then i run cold water through it to make sure it is going to last. if it fades at all i either go over it with a micron pen or start over. if there is alot of ink involved in the label i may heat set and cure it over and over for a week before i test it; i have had pretty good luck with my labels lasting.