collagenUnderstanding how your body changes with age and what you can do to counteract common deficiencies is another piece of the beauty-from-within puzzle. That’s where collagen comes into play. Collagen is the protein that enables your skin to stay taut, your nails strong and your hair healthy. And because your body’s own collagen production steadily declines after age 25, supplementation is a must. “I have seen collagen peptides work incredibly well to restore hydration and resilience to skin, as well as to build stronger hair,” says Hart.

Today, you can find capsules with marine collagen or collagen from grass-fed cows, delicious collagen gummies and collagen powders to add to other beauty-boosting foods such as bone broth, which is already collagen rich. Translation: You have umpteen options for incorporating this beautifying nutrient into your diet.