Is it normal to procrastinate showers?

I shower in the evening, so often, after a long day, I'm tired and irritated and I always end up showering at midnight or later. Of course I go to sleep later, because of my hair, and in the morning I wake up even more tired than the day before.
It doesn't matter how many times I think that if I shower now I will be able to rest after and to go to sleep earlier and in the morning I'll feel great, I never do it.
It has been going on for a while and I'm worried of it becoming a habit.