Vitamin C prevents melanin precipitation
The whitening principle of vitamin C
First of all, there are many factors that determine whether our skin is black or white, such as genetics, sun exposure, endocrine hormone levels, etc., but generally speaking, the color of the skin mainly depends on the content of melanin in the skin.
The root of melanin production is tyrosinase. The tyrosine in melanocytes forms eumelanin after a series of chemical and oxidation reactions and reaches the surface of the skin. If the skin’s metabolism is not smooth, it will cause a large amount of pigmentation and aggregation. , The color of the skin will darken or the formation of spots will cause uneven skin, which will darken people.
Therefore, inhibiting the synthesis of enzymes is the latest key. Vitamin C can inhibit the activity of enzymes, reduce the production of melanin, and has certain antioxidant properties. It can reduce the formed melanin into a colorless melanin precursor, thereby improving skin dullness.
How much vitamin C to eat to whiten ?
According to the recommendation of the authority of the Ministry of Health, Labour and Welfare of Japan, in order to prevent people from getting sick due to lack of vitamin C, it is recommended that each person consume 100mg of vitamin C per day. This dose can generally be supplemented by eating more fresh fruits and vegetables daily.
If you want to achieve the effects of whitening, anti-oxidation, and promotion of collagen synthesis, scientific research has shown that you need to consume at least 1,000 mg of vitamin C per day, and that 1,000-2,000 mg of vitamin C per day is not only good for beauty, it will not cause a negative reaction to the body.
The recommended maximum intake of vitamin C is 1000 mg/day.
However, the Chinese Nutrition Society recommends that the maximum tolerable intake of vitamin C is 1000 mg/day. Appropriate supplementation of vitamin C can have the effects of firming skin, strengthening bones and teeth, enhancing immune function, promoting mineral absorption, reducing arteriosclerosis, anti-tumor and anti-oxidation.
Excessive intake (long-term intake of 1-4g or more per day) can cause high iron red blood cell anemia, diarrhea, abdominal pain, gastrointestinal bleeding and other gastrointestinal discomforts, which will reduce the body’s disease resistance and immunity. Some people can also cause hyperuricemia. Disease, accelerate the formation of kidney and bladder stones.
●Therefore, it is best not to exceed 1000mg a day!
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