Be sure to go to a formal place, don't go to a tattoo shop, and experience it yourself! Concord Laser Center and Shangdu Shendian Tattoo Washing Center are both good choices in China. Where there is no guarantee, consider leaving a scar without cleaning. If it is not good, it is better not to wash it. I washed a lot of places before tattooing. It was terrible not to wash it off, and I learned a lot. Later, I went to a regular place to wash it clean, but the scar I washed before was still there. Prepare to repair the scar again. Save my skin.