(Ask about hair loss) - Scalp tattoo for crown hair loss

If you look at your back in the mirror and notice that the crown area looks a bit empty, what should you do? I became interested in hairline transplants, crown area tattoos, and related treatments after accidentally seeing my own back. It doesn't feel very full, and the skin on my crown looks very white, so I suspect hair loss and am considering getting a crown tattoo. How does Korea's hair tattoo technology compare to other countries? With hair tattoos, is it possible for the color to fade if I wash my hair daily? If anyone has already tried it or has information from around, please let me know~