On my first tattoo, I used Saniderm, so that is all I know. For me, the instructions were keep the initial derm on for 24 hours, remove in the shower and wash thoroughly with something like Dial Gold. Air or Pat dry with paper towel and put a new piece on for 3 days. After that, remove it carefully in the shower, wash it thoroughly 2-3 time a day and apply Dab tattoo cream.
My experience was very good. The initial piece was filled with fluid, but the second piece was dry when I removed it. I had no scabbing. When I peeling, it was tiny flakes and no large chunks. This was a shoulder to elbow piece too, not a small tattoo. After that it was pretty well past the risk of infection stage and the hardest part was keeping my skin moisturized while not overdoing it. My skin in the winter is so dry anyway. I would apply Aveeno after showering and by the time I was getting dressed, it was bone dry again.
I plan to get my other arm done and will be following the same method. It definitely made it easier to care for and way less worry of infection during those initial first few days.