I dyed my hair myself.

After trying it myself at home a few times, I find myself continuing to do it myself instead of going to the salon. This time, I bought a hair dye through Cash Deal on Cash Walk; it's a shampoo type, so the dye gets applied while you wash your hair, though it does take a little time. I left it on for about 10 to 15 minutes before washing, and the result looks natural. It doesn't completely cover gray hair, but my hair isn't damaged at all and it has a nice shine. It's affordable, with a pack of 5 for about 10,000 won.