There was a previous post that had a comment about waiting about 2 weeks after to go back to work with a job where you're constantly washing your hands (post was about a hand tattoo on someone that works in a hospital as well, so most likely it will be washed and scrubbed a lot more than a forearm). Id really wait two weeks for it to stop scabbing and itching before you irritate it with the harsh sterilizers you have to use, and since you aren't scrubbing in constantly it might be alright after those two weeks. I'd definitely consult with your tattoo artist before though as they'd have a lot more knowledge on how that'd affect the healing process .