I never take a mirror camping. It matters not to me that I can't see what I look like when I wake up, and as Mr H doesn't scream when he sees me I'm guessing it's not that bad. When camping, I wear no makeup and don't wash and style my hair every day; the whole point of a camping holiday is escape from everyday life, pressures, worries, 'normality'.
I've never understood women (or men for that matter) who clearly have their normal bathroom / make up routine every day when they are camping - just let it go. Relax, stop worrying about what you look like in the holiday photos. Kick back and be at one with nature.
I know that some people CANNOT go out in public without makeup on and their hair perfect (or that perfectly messy that takes hours to achieve). I am not one of those people. I never wore much makeup when I was young, and now it is pretty much limited to mascara (only because I have really short eyelashes), and maybe some powder if it's a special occasion. Yes, I'm pretty lazy in the makeup department unless it is a really special occasion when I'll dig out some eye shadow...
Talking about hair, having been through the phase of liking the novelty of it straightened, I am now enjoying the wildness of curly, 'whatever' hair. It is freeing and makes me feel less like a clone of everyone else with a straight bob haircut. The only time my hair is straight now is when it has just been cut - and that is mainly because the curls don't sit naturally when they've been pulled around, dried, scrunched and tweaked. So I have a couple of days of smart, straight hair every 6 weeks, and then I revert to the 'dragged through hedge backwards' look, and just let it all go...