美容：make oneself more beautiful
美容的食物：beauty foods, beauty-enhancing foods
I even found this:
营养美容: nutritional cosmetology
关键是将有助于美容的食物放在手边”，他说。
He said, "The key is having beauty-enhancing foods at hand."
试试这些家庭常见食物的美容用途吧。
Try the beautifying effect of these common household foods.
浆果：不同种类的浆果如蓝莓，黑莓，树莓，小红莓以及草莓都是超赞的美容食物哦。
Berries: different kinds of berries such as blueberries, blackberries, raspberries, cranberries, as well as strawberries are all super beauty foods.
协会有专家为你解答体育按摩、常见病的穴位按摩以及营养美容保健等各方面的问题。
Our association has an expert to answer questions on all kinds of problems relating to sports massage, acupuncture point massage for common illnesses as well as nutritional cosmetology, health care etcetera.