There are many customs to cut hair in the New Year, so how long can you cut your hair after the New Year?

You can get a haircut after the first month.

If you don't shave your head in the first month according to tradition.

It is auspicious to have a haircut on February 2, which means "the dragon looks up", but these are people's hopes for the new year. Haircuts are not allowed in the first month.

Extended data:

Not shaving your head in the first month refers to the custom of "if you don't shave your head in the first month, you will die if you shave your head" which is circulated in most parts of China. This custom originated around 1644, when the Qing court issued a haircut order.

My uncle died in the first month, which is a misinformation. Not having a haircut means "thinking about the past and thinking about the future", which is a custom that has been passed down since the late Ming and early Qing dynasties. At that time, the Qing dynasty ordered all citizens to have their hair cut. Some people don't have their hair cut in the first month to show their nostalgia for the Ming Dynasty.

References:

Baidu Encyclopedia-Don't shave your head in the first month