College students are adults. Except for some militarized schools. Most schools will not ban perming, dyeing hair and wearing high heels. The teacher doesn't care about this either. If you are a freshman. It is recommended to do hair after military training. Because it is not easy to take care of during military training. Hair color should be low-key, not unconventional. College students still dye their hair a lot. But it depends on the school. After all, the regulations of each school are different. Under normal circumstances, universities are not too strict about dyeing hair and perming hair. But you can't choose colors that are too exaggerated. Because I heard that dyes are harmful to hair. As long as you don't make it too different, I don't think people will treat you as an alien. It is best not to dye your hair and perm at the same time.