If you want beautiful and youthful skin, what you eat matters. Here are 6 healthy beauty foods to help keep your skin healthy, fight inflammation and keep aging at bay.

Brierley Horton, MS, RD

When it comes to beautiful skin, we often lean heavily on what we can put on-or in (hello, injectables)-our skin, like face and eye creams, or sunscreen. Turns out, what you put in your body as part of your daily diet can help keep you looking youthful, too-as well as help fight inflammation, which plays a role in physical ailments such as psoriatic arthritis and diabetes.

Related: 7-Day Meal Plan for Healthy Skin

Here are six foods to help fight wrinkles and inflammation, as well as boost collagen and hydration for healthy, younger-looking skin.

1.Kale

Pictured recipe: Kale Salad with Beets & Wild Rice

This leafy green has already reached nutrition superstardom, but now you can add anti-aging skin powers to its list of accolades. Kale is brimming with lutein and zeaxanthin, two carotenoids that, according to research published in the journal Clinics in Dermatology, can boost your skin's elasticity and hydration, as well as the fat under your skin, which acts as a "measure" of youthfulness. Lutein specifically also appears to be able to shield your skin from a particularly harmful wavelength of light (and one that sunscreen isn't very good at protecting against) called blue light. Don't like kale? Try avocados instead-they're also full of lutein and zeaxanthin.

2. Pomegranates

Pictured recipe: Pomegranate, Cranberry & Brie Bruschetta

Pomegranates-and raspberries-are packed with ellagic acid, a compound that research shows could naturally help prevent wrinkles from forming. A study published in Experimental Dermatology found that ellagic acid prevents the breakdown of skin-firming collagen, and also prevents some UV-induced inflammation. Thus, ellagic acid can slow the chain of skin-aging reactions that occur as a result of that inflammation.

3. Probiotics

Pictured recipe: Homemade Kimchi

Newer research suggests that some probiotic strains can help prevent or minimize UV-induced skin damage. Other strains have been shown to help maintain a lower skin pH (aging skin has a higher pH) or scavenge for harmful free radicals. But, as with most research on probiotics, specific strains are required to see benefits, and they aren't always ones that can be found in actual food products. That said, there are so many potential benefits of consuming probiotics in the form of yogurt or kefir, fermented veggies like sauerkraut and kimchi, soy sauce or miso, etc.-that adding them to your diet for skin health won't hurt, even if it's too soon to say they'll make a significant difference for your skin.

4. Coffee

Your cup-a-day habit could help ward off skin cancer and fight rosacea. In one study in the European Journal of Cancer Prevention, women who drank one cup of coffee a day reduced their risk of developing nonmelanoma skin cancer by about 10 percent. It had to be caffeinated, though, as decaf wasn't associated with the same protective benefits. Also, the more coffee the women drank-up to about 6 cups or so per day-the lower their skin cancer risk. Coffee drinkers were also less likely to get rosacea, according to another study. A perky mind and better skin from our favorite morning ritual? Sounds good to us.

5. Bone broth

Bone broth contains plentiful collagen, and that's why you'll want to add it to your diet for a more youthful glow. Although most of the research is on animals, not humans, studies show that consuming collagen may increase some types of skin collagen, and also decrease an enzyme that breaks down collagen. Consuming collagen may also help lessen sun-induced dry skin. Meat is also rich in collagen, and be sure to include vitamin C-rich foods, like citrus, kiwi and bell peppers, since vitamin C is important for collagen production.

Read more: Should You Eat Collagen?

6. Salmon

Pictured recipe: Cajun Salmon with Greek Yogurt Remoulade

Those good-for-you omega-3s in salmon and other fatty fish like tuna and sardines (plus some shellfish like oysters and mussels) could help you stay looking young and maybe even save you from a sunburn. Don't ditch the sunscreen altogether, but research indicates that omega-3s quell inflammation that flares up in your skin after UV exposure, and also act like a natural sunblock, helping to prevent sunburn. And don't forget: those omega-3s aren't only beneficial to your skin, they're also good for your heart.

Learn more: Foods to Prevent Skin Cancer

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