Do you all wash your hair once a day when it's not summer?

It is unavoidable in the summer, but assuming it is not summer, you don't sweat, and you haven't gone out

I'm curious if everyone washes their hair at least once a day.

I start seeing dandruff by evening, and since my hair is long enough to reach my waist, I really have to wash it.

I don't know if it's just me, but if I don't wash my hair for even a day, I look like someone who hasn't washed it for days.

My hair gets oily easily, so I'm worried about clogged pores and hair loss. What does your hair look like if you don't wash it for even a day?