The function of vitamin C: 1, promoting the biosynthesis of bone collagen. It is beneficial to the faster healing of tissue wounds. 2. Improve the utilization rate of iron, calcium and folic acid. 3. Improve the metabolism of fat and lipids, especially cholesterol, and prevent cardiovascular diseases. 4, promote the growth of teeth and bones, prevent gum bleeding, prevent joint pain, lumbago and leg pain 5, enhance the body's anti-stress ability and immunity to the external environment. 6. Promote the synthesis of collagen and prevent gum bleeding. 7. Full absorption can inhibit the increase of blood pressure. Natural vitamin E has the following five functions: 1, which makes the skin moist, soft and elastic, and prevents facial dark yellow and spots caused by endocrine disorders; 2, delaying aging, resisting oxidation and improving immunity; 3, reduce numbness and stiffness of limbs, and reduce the incidence of heart disease and atherosclerosis; 4. Prevent excessive aggregation of platelets, improve the stability of erythrocyte membrane and the synthesis of red blood cells; 5. Regulate endocrine and maintain normal sex hormone secretion and reproductive function. From the functions of natural vitamin E and vitamin C listed above, it can be seen that vitamin C has no whitening effect, but natural vitamin E can regulate endocrine to achieve the effect of whitening and freckle removal.