You really can fight wrinkles from the inside out. And there's a fruit that can lead the charge.

It's papaya. What makes papaya so perfect? Easy. Vitamin C. Papaya has loads of it, and getting lots of vitamin C may mean more youthful skin -- fewer wrinkles and less thinning and dryness. A recent study in women over 40 confirmed it.

The Mysteries of C
Vitamin C is a natural friend to skin. The nutrient is essential for making collagen, the protein fibers that give skin its strength and resiliency. And being a powerful antioxidant, C also disarms free radicals that would otherwise chip away and weaken collagen. (Did you know? Vitamin C helps protect skin from this sun scourge, too.)

More Food for Your Face
A little extra vitamin C isn't all it takes to plump your complexion. Here are a few more food tips that can help keep your face fresh:

• Munch on walnuts. In the vitamin C study, researchers also noted that diets rich in linoleic acid -- an essential fatty acid in walnuts -- meant moister, plumper skin. (Bonus: Walnuts will make this happy, too.)
• Ease up on fats and refined carbs. Scientists found both were linked to aging skin. Discover the dark side of processed foods with this article.
• Think whole grains. The magnesium and B vitamins you get from them help with the regeneration of skin cells. Find out what foods are mostly whole grains.
• Keep the fruits and veggies coming. To stay smooth and healthy, your skin needs a whole slew of antioxidant-rich produce. Like this root vegetable.

Read this article for a complete chart of healthy food choices for your skin.