Bought with my own money - Gua Sha

I work in an office job in the cosmetics industry, and my boss once gave me a gua sha to try. I wondered if it would help me get a V-line, so I've been rubbing it on my face every night after applying my basic skincare products. It hurts, so I can't do it every day, but I do it occasionally, and I can see some changes and feel like things are changing a little. It still hurts, but I think I need to do it more consistently now.