Settings to make hair look less grainy/shiny?

I am not very technically knowledgeable in what is causing it or how to describe it but the hair looks in very abnormal ways, as if it's too glowy or flashy while also shimmering and grainy. I think it could be related to settings but I have experimented a bit and didn't succeed a lot. Any ideas on what it could be? The last game I experienced such a grainy phenomenon was Wukong.