When doing the forehead tattoo, I used a water-based pen and applied Vaseline. This time, I used a transfer ink pen, switched to Vaseline, and only applied it once. However, it didn't disappear even after taking a bath and rubbing it. It usually disappeared around the third day, so I'll redraw the forehead design. I'm using my personal transfer pen now; please refer to the fifth photo for reference. It's incredibly convenient.