Photo: Kansas Poetry (Patrick), Flickr

Maybe you don't like wearing makeup to the gym (let's face it -- wiping sweat and foundation on your towel is pretty gross). Or perhaps you don't like wearing makeup ever. Choosing to eschew cosmetics doesn't mean you don't want to look beautiful -- you just want it to be all natural. And that's no problem.

Good skin is the first step, and you don't have to slather on expensive creams or toxic zit-killing agents to get it. In fact, you can simply adjust your diet! AOL Health has lots of tips on foods you should eat (or wear) for the skin-beautifying benefits, like oranges to undo damage from sunlight.

You also might want to put some thought into what you don't eat. Supermodel Claudia Schiffer, for example, recently posed with no makeup on for Harper's Bazaar and told the mag that cutting dairy helped her complexion.

The next step is to take a look at your eyebrows. Well-shaped brows can dramatically change the way your face looks, making you look younger and more awake. While some experts recommend filling in sparse brows, as long as yours have some color, a proper shape can make all the difference -- find tips from the pros here.

Finally, although you're not putting color on your face, you should still consider the colors you're wearing. Certain colors are flattering on all skin tones, according to Real Simple. So, if you're not sure about what colors look best, try eggplant, true red, Indian teal and mellow rose.

Want to know your skin tone (generally divided by seasons: Winter, spring, summer, fall)? An article on ehow.com gives clear and concise descriptions of each season, along with the colors that work best for each skin tone. Even more helpful -- it tells you which colors to avoid.

If that all sounds confusing to you, don't be embarrassed. I'm not entirely sure which season I am, to be honest. But I do know that teal, navy and royal blue make me look really healthy, and I can't think of a much better indicator than that.

And, at the risk of sounding completely corny, I have to say that confidence and a bright smile go a long way. Have you ever seen someone with a great presence and strong smile and thought, "Boy, she could use some mascara"? Didn't think so.

Oh, and if you're not all that opposed to wearing makeup, but you're concerned about the ingredients, check out GreenDaily's post on sexy vegan makeup.