If you want to achieve the effects of whitening, antioxidation and promoting collagen synthesis by taking vitamin C, you need to take at least vitamin C 1000mg every day.

By taking vitamin C orally, it is absorbed by the gastrointestinal tract and then flows through various tissues of the body with the blood, which inhibits melanin production from the basal layer of the skin, so as to improve the whiteness of the skin and help the skin to be white and clean.

Extended data If you want to take vitamin C effectively, you'd better follow two rules:

1, take vitamin C after meals, because the absorption rate of vitamin C after meals is about 1.5 times that of fasting;

2, a small amount of intake many times, because the absorption climax of vitamin C will arrive 3 hours after intake.

The brain needs vitamin C more. The report pointed out that daily intake of 1000-2000mg of vitamin C not only has a good effect on beauty, but also does not cause negative reactions to the body.

References:

Baidu Encyclopedia-Vitamin C is a whitening artifact, and it is effective only when the intake is large.