How about washing your hair the day before the lottery?

It is more appropriate to wash your hair the night before the exam, so you won't get water in your head. Shampooing should be done at any time. You won't fail because you washed your hair, and you won't fail because you don't like your hair. If you are confident in the exam, you can relax by washing your hair and massaging it. If you don't have any knowledge, you should spend your time studying. ...