Everyone wants his skin to be fair, moisturized, delicate, tender, and elastic. However, some friends of the skin is not satisfactory, coarse dry, lack of luster. Analysis of its causes, on the one hand with genetic factors and disease, on the other hand with acquired nutrition and maintenance. Normally we can protect skin through all sorts of external use means, but the skin needs the conservation of immanent nutrition more, so-called ''inside raise outside''.
1. The structure of the epidermis
The epidermis is the outermost layer of the skin. The epidermis can be divided into 5 layers from the outside to the inside:
Cuticle, transparent layer, granular layer, spinous cell layer, basal layer
Among them, the basal layer cells continue to divide and gradually move upward, keratinize, and degenerate, forming other layers of the epidermis, and finally keratinize and fall off. Generally, this process takes 28 days and is also called the ''skin metabolic cycle.'' The basal layer contains melanocytes, which can produce melanin, which determines the depth of the skin. Only skin care from the outside is difficult to go deep inside to improve the skin base, so skin beauty care should start with nutrition.
2. The formation of skin color
Biological pigments: melanin, yellow carotene, red oxidized hemoglobin.
Among them, melanin and oxidized hemoglobin are self-synthesized pigments, and carotene is the pigment obtained from food.
Skin tone formation: It is caused by the difference in the amount and distribution of pigment contained in the skin; melanin is the most important factor in determining skin tone.
3. Whitening nutrition and health care
Melanin is a protein derivative, which is converted from tyrosine. It has advantages and disadvantages to the human body. It is an important barrier to prevent ultraviolet rays from damaging the skin, but excessive melanin production can affect beauty and even health. Studies have shown that a variety of nutritional factors can inhibit the production of melanin, such as vitamin C, vitamin E, etc., so have the effect of beautiful white consequently.
Some recommendations for nutrition and health care are as follows:
1. Adequate intake of various vitamins
In particular, vitamin C and vitamin E can inhibit melanin production and have a whitening effect, this kind of food should be absorbed more.
2. Eat less irritating foods
Irritating foods are easy to age the skin. Especially in the summer, drink less pigment-containing beverages such as strong tea, coffee, etc., which can increase skin pigmentation.
3. Develop a good lifestyle
Quit bad habits such as smoking, drinking, staying up late, etc. Especially in summer, sun protection must be done well.
4. Small point of whitening foods
Beautiful white skin should build above all on the foundation of reasonable nutrition, and pay proper attention to foods that can bring benefits to our skin. The most suitable foods for whitening are as follows:
1. Kiwi: Rich in vitamin C, which can interfere with the production of melanin, prevent pigmentation, keep the skin white, and help eliminate the existing freckles and other spots on the skin.
2. Soybean: Rich in vitamin E, it can not only scavenge free radicals, delay skin aging, but also prevent skin pigmentation.
3. Tomato: Lycopene helps smooth out new wrinkles, leaving skin soft and smooth. Often eat tomatoes, also not easy to appear dark circles and sunburned.
4. Red dates: Contains a lot of vitamin C, vitamin E, etc., has the effect of delaying skin aging, but also has the effect of invigorating the qi and strengthening the spleen, making the complexion ruddy, skin moisturized, and muscle plump.
5. Dietary supplement recommendation
1. Vitamin C
Vitamin C is an important nutrient for the human body. It improves immunity and reduces the chance of catching a cold. It has anti-oxidation and whitening and freckle removal, improves skin roughness and promotes collagen synthesis. Vitamin C has a good anti-oxidation and anti-free radical effect. It can remove human body waste toxins and reduce pigment Composure, supplementing adequate vitamin C every day, and drinking plenty of water can increase toxin metabolism. So there is a saying that ''white beauty, brightening depends on vitamin C''.
2. Vitamin E
Vitamin E has a strong antioxidant effect, can protect cells and tissues from oxidative damage, blocking the formation of melanin helps to improve the state of the skin, and help you break the skin ''wrinkle'' language. Vitamin E should be extracted from natural food seeds, which has higher biological activity and bioavailability than synthetic vitamin E.
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