Main functions: women like it to whiten skin, prevent pigmentation, and help tighten and wrinkle; Children love its function of reducing colds; Middle-aged and elderly people like its anti-aging and cardiovascular disease prevention functions. Enhance immunity. Anti-oxidation-whitening skin and preventing pigmentation. Antioxidant-anti-aging (protecting skin/protecting circulatory system/preventing Alzheimer's disease/preventing cataract). Prevention and treatment of scurvy. Promote collagen formation (increase skin elasticity/prevent arthritis/promote wound healing/promote microvascular health). Help iron absorption.
The principle of enhancing immunity by VC
VC can enhance the chemotaxis and deformability of neutrophils and improve their bactericidal ability. Promote the generation of lymphocytes and improve the body's ability to identify and kill foreign cells and malignant cells. Participate in the synthesis of immunoglobulin. Improve the activity of complement esterase in CI and increase the production of complement CI. Promote the production of interferon, interfere with the transcription of virus mRNA, and inhibit the proliferation of virus.
Principle of whitening efficacy
Vitamin C can reduce dark oxidized melanin to light reduced pigment, prevent the oxidation process of melanin metabolism and inhibit the formation of melanin.
"Modern Practical Dermatology and Cosmetics" Vitamin C can inhibit the oxidation of dopa, thus reducing the production of melanin and reducing the melanin formed in the skin to colorless substances.
Vitamin c in dermatology of integrated traditional Chinese and western medicine has a great relationship with cell oxidation and reduction, which can inhibit abnormal pigmentation of skin. It can reduce dopaquinone to dopa, reverse the reaction of pigment formation, thereby inhibiting melanin metabolism and reducing the formation of melanin, and can directly reduce melanin, with good decoloring effect.
To sum up, the effect of vitamin C on whitening can be manifested in two aspects:
1) Prevent the skin from blackening: reduce the production of melanin by reducing dopaquinone to dopa;
2) Treatment of pigmentation: directly reduce dark oxidized melanin to light reduced pigment.
Principle of enhancing skin immunity and antioxidation by VC
Black and yellow skin-white and clear: Vitamin C is widely used in whitening skin care products and is known as "a classic natural whitening element". Oral vitamin C, starting from melanocytes in the basal layer of skin, can inhibit tyrosinase activity, block melanin production and improve skin whiteness from the inside out.
Rough-smooth skin: Vitamin C protects tissues and organs in vivo from external chemical and biological harmful factors, promotes the formation of skin collagen, thus maintaining skin elasticity and moisture, keeping skin delicate and smooth, showing texture and transparency, and preventing skin aging problems such as wrinkles.
Sensitive skin-improve skin immunity: the real reason for skin sensitivity is that the barrier function of skin is weak, and external invasion can easily hurt skin. Vitamin C enhances the phagocytosis of skin macrophages, thus enhancing the skin's own immunity, and at the same time improving the skin's barrier function to resist the invasion of harmful substances from outside.