These tattoo stickers are easy to use. Tear off the protective film, stick the pattern on the skin, wet the back of the sticker with water, press for 20 seconds, remove the sticker, and the pattern will be printed on the skin. If you want to keep it for a long time, you'd better stick it on the part that will not rub frequently, so it will last for 10 days or more. If you want to quickly erase these tattoos, please use alcohol to wipe them, and they will be completely removed by alcohol.