The skin of those approaching 50 goes through an observable change in the course of time. Reduced levels of estrogen, a decrease in the rate of cellular turnover, and the progressive loss of collagen may cause it to appear drier, more fragile, and thinner. Without doubt, external treatment can be very useful, but there is no substitute for health except that obtained from inside. To get an absolutely glowing look, you should eat many nutrient-dense foods that help counter oxidation and produce collagen, and keep your skin well nourished.
Blueberries

It is antioxidants that make blueberries unique, while the coloration is due to anthocyanins. These antioxidants act on the free radicals created by the UV light and pollution, thus protecting the collagen fibers from them. In addition, these components promote increased blood circulation and nutrient supply to the dermis.
Walnuts

While most nuts lack ALA, which is an unsaturated fatty acid, walnuts contain high amounts of ALA, which is characterized by several anti-inflammatory properties. Such properties enable them to treat skin problems such as dryness and inflammation. Moreover, they contain zinc, which is helpful during wound healing.
Green Tea

With green tea containing EGCG, which is a very powerful type of polyphenol compound, it is highly effective in combating inflammation as well as blocking the action of enzymes resulting in the breakdown of elastin. It is therefore advised that one consume it either by drinking or mixing it in their smoothies.
Dark Green Leafy Vegetables (Spinach and Kale)

Spinach and kale are rich in Vitamin C, Vitamin E, and beta-carotene. In addition to these, their chlorophyll contents work to detoxify and aid oxygen transport. These green veggies also contain enough lutein for maintaining hydration and elasticity of the skin.
Extra Virgin Olive Oil

This is the essential fat of the Mediterranean diet. It contains high amounts of oleic acid and antioxidant polyphenols. Research shows that this kind of fat helps to prevent photo-aging of the face, as well as providing softness and hydration to skin tissues.
Dark Chocolate (more than 70% of Cocoa)

This type of chocolate has flavanols, which help to hydrate, densify, and provide increased micro-circulation for the skin tissues. Antioxidants released from polyphenols found in dark chocolate can help to enhance blood circulation to the skin.
Bell Peppers

No matter whether they are red, yellow, or orange, bell peppers are some of the richest food sources of Vitamin C. This vital water-soluble nutrient is necessary for enzymatic processes that cross-link collagen fibers, ensuring your skin remains toned while at the same time trying to even out hyperpigmentation zones.
Pumpkin Seeds

One of the finest vegetable sources of zinc, a mineral responsible for cell regeneration and sebum secretion regulation, pumpkin seeds are also very rich in Vitamins E and selenium- all three elements form a protective antioxidant complex facilitating fast skin recovery.