Typically, 4 to 5 days is enough for the complete healing of the tattoo. This product will protect the tattoo from infections, germs, and other external factors during this period. Most importantly, it helps to make the healing process quick. After the recommended time has passed, you can safely remove this protective layer.  Also, keep in mind that leaving it on for too long can lead to various complications, including itching and redness. It may even trigger allergic reactions in individuals with sensitive skin. That’s why you should leave the Tegaderm only for the recommended period.