You shouldn't keep the cling film on for more than a couple of hours after getting a tattoo. Once you remove it, wash the area since bacteria can breed beneath the film.
It's possible that your issue with scum marks isn't due to the soap you use, but rather the water. People who have hard water tend to not be able to...
First, follow your artist's instructions. Every tattoo artist has a different process so whatever they tell you trumps whatever instructions you find on the internet. As a rule of thumb,...
With most cameras you just push it once, and then start rewinding. In your case, test the rewind device. Do this when the camera is not loaded with film. To...