So I hope no one minds me resurrecting this thread, but it came up in my searches, and I'm seeing a few things I do that I don't see shared.
1) Hairsticks! No, seriously. I haven't gotten my hair cut in over two years (I clip out tangles and split ends when I find them with a little pair of sewing scissors. But Hairsticks are much less harsh on your hair then ties/clips. So, I have waist-length hair, and I just braid it, and pin it up with a hairstick. 5 minutes, in the morning, tops!
At night, I unpin it, brush it, and re-braid it. I only wash it about once a week, and it works out perfectly fine. :) And I get a lot of compliments on my hair, especially when I wear one of my more colourful or shiny hairsticks. And hairsticks, properly used, will hold through roller coasters! (They will also hold when swimming, -- I have two metal hairsticks I use when I'm swimming) Long hair really is low-maintenance!
2) Henna: I'm surprised no one's mentioned (or if they did I didn't see it), Henna Hair Dye for the folks who want to colour their hair! I henna my hair using a solid henna block (henna mixed with shea butter and such), and one block will do about two dye jobs for my long hair . . but considering I only colour may hair once every six months, at most, it's really not that much. And, honestly, I might just not buy another block when I finish this one, and see how much I miss it.
3) Water. Though a lot of folks have talked about hydration, may I just add -- keep a water bottle in your purse! It helps -so- much, especially in summers.
4) Razors. I don't shave very often (and not at all in winter). I do, however, need to keep my pits and groin somewhat clipped -- but I use scissors rather then a razor. Just a dedicated pair of sewing scissors. I do use a razor every once in a while when my legs get super-hairy, but that's probably only once or twice per summer. . so my pack of razors lasts -forever-!
5) I do wear makeup for some formal occasions or if I'm going to be preforming/presenting. It's a chance to have fun and get 'dressed up', and it spares me the 'are you ok, you look like you're going to faint' statements. I do have to be very particular about my makeup, since I have a carmine allergy, so there's only a few brands I can buy from. . . but now, I have my makeup stash, and I don't need any more for a -long- while!
The only thing I wear regularly is a mineral powder that helps with my acne and gives a bit of sun protection. I put in my order for lots of it when the maker has a sale and/or free shipping. :D
6) Microfiber Washcloths. I was initially skeptical, but these things are amazing! They exfoliate, and are great removers of makeup, dirt and more! And you can just throw them in the wash. I've had mine for -years- now and they're still going strong. I use them pretty much every day.
And finally, seconding/thirding 'n'th-ing the 'just don't give a fuck' option. So long as you are comfortable in your own skin, that's the most important part, I think.