I trusted Giwoo Teacher's brand and bought it. I usually use JOLE* products, but I think I switched well. The color fades naturally and it's less irritating. Especially since my hair is light brown, it suits me well, so I liked it even more. It's a shame you can only use it 4 times, but I'm satisfied with the product itself. Also, it's convenient and easy to use. It comes with a brush, so once you use it, you can just throw it away, which is simple. While I was doing mine, I also did my mom's, and even though she was negative about eyebrow tinting, she was totally satisfied. This is my first Giwoo Teacher product. I'll try buying other products one by one~~~