Amino Acids: Stimulate elastin and collagen production, giving the skin a wrinkle-free and smooth appearance .

Carotenoids (Retinol, Beta-Carotene, Vitamin A): Fight the harmful free radicals. A study found that people with high level of carotenoids (antioxidants) in their system had younger-looking skin

Omega-3 Fatty Acids: They have anti-inflammatory properties, and their supplements have shown to slow down the aging process

Polyphenols: The consumption of polyphenols protects you from UV damage. They are potent antioxidant and anti-inflammatory agents and have anti-DNA damage effects

Vitamin D: This vitamin protects your skin cells from damage due to UV exposure, prevents skin infections, and has an anti-aging effect

Selenium: It boosts the antioxidant defenses of your skin, protects the skin cells from UV damage, and has anti-inflammatory effects

Vitamin C: It protects your skin against pollution and other environmental effects, boosts collagen production, and exhibits antioxidant properties

Vitamin E: It protects your skin from oxidative stress, thus preventing long-term damages such as wrinkles, edema, erythema, and thickening of the skin

Flavonoids: They prevent oxidative stress, thus preventing the signs of aging

Green Tea Polyphenols: The topical application or consumption of green tea polyphenols prevents damage due to UV rays and chemical carcinogens.