Cross-contamination occurs when gluten-free foods come into contact with foods that contain gluten. It can happen during the manufacturing process, for example, if the same equipment is used to make a variety of products. Some food labels include a may contain statement if cross-contamination is likely.
After getting a tattoo, swimming must be avoided until the skin has stopped peeling and all scabs have fallen off. For most people, this means waiting a minimum of two weeks.
Long showers or baths should be avoided for about 2 weeks after your new tattoo - prolonged soaking and shower jets directly on the area can damage your skin. Avoid harsh shower or bath products on the skin, and don't rub the tattoo when you wash.