Can I take a shower and wash my hair on the first day of the first month?

Can I wash my hair on the third day of New Year's Eve?

You can't wash your hair from New Year's Day to New Year's Day, because washing your hair on this day will wash away your fortune and blessings. At the same time, because the first day to the third day is the birthday of the water god, you can't touch the water, otherwise it is disrespectful to the water god. Therefore, you can't wash your hair on New Year's Day, but you can wash your hair casually after the third day.