2. Proanthocyanidins
Proanthocyanidins have strong ultraviolet absorption, special antioxidant activity and free radical scavenging ability, and can also inhibit tyrosinase activity, reduce melanin deposition, and inhibit the reaction between protein amino group and nucleic acid amino group, thus inhibiting lipofuscin and senile plaque formation.
3. Fruit acid
Fruit acid is an acid extracted from fruits, mainly including lactic acid, malic acid, salicylic acid and its derivatives, among which glycolic acid extracted from sugarcane has the best effect. Fruit acid can effectively remove hyperkeratinized stratum corneum, stimulate the growth of new cells, help remove facial fine lines, dilute epidermal pigment, and make skin softer, whiter, smoother and more elastic.
4, vitamin A acid
Vitamin A acid is an intermediate product of vitamin A metabolism in vivo, which mainly affects bone growth and promotes epithelial cell proliferation, differentiation, keratolysis and other metabolic functions. It can promote the proliferation of capillaries, collagen fibers and elastic fibers when used for skin care.
Can make the skin elastic, accelerate the aging keratin metabolism of melanin deposition, and effectively reduce pigmentation. It is very effective in treating skin injuries such as senile plaques, wrinkles and strong photosensitivity, but improper use may also lead to redness, peeling and serious pigmentation of the skin.
5. kojic acid
Kojic acid is generally extracted from filamentous fungi such as Penicillium and Aspergillus, and it is the most obvious whitening substance among the existing whitening ingredients. It can combine with copper ions in tyrosinase to inactivate it, thus achieving the purpose of blocking melanin production, thus effectively removing chloasma and senile plaque, with a whitening rate of about 800/0 and a low spot rebound rate.
However, kojic acid is a toxic cell, which is sensitive to light and heat, easy to oxidize, easy to gather metal ions, and has poor skin absorption, so it cannot be directly used for whitening, and kojic acid derivatives can well avoid these problems.
6. Arbutin
Arbutin, also known as arbutin and ursolic acid, is a component extracted from the leaves of arbutin. Arbutin can accelerate the decomposition and excretion of melanin without affecting cell proliferation, thus reducing the deposition of skin pigment, and the freckle removal rate is as high as 90%. And high safety, so it is a commonly used whitening raw material for many high-end cosmetics.
7. Hydroquinone
Hydroquinone, also known as hydroquinone, can coagulate amino acids in tyrosinase and make it lose its catalytic activity, thus achieving whitening effect. However, too high concentration of hydroquinone is irritating, which may directly cause permanent white spots on the skin, and it is easy to be oxidized, so it needs to be sealed and stored away from light. Therefore, hydroquinone in whitening formula is mostly extracted directly from plants, which is safer and more stable.
8. Green tea extract
Experts found in animal experiments that catechins in green tea can resist skin cancer caused by UVB. Because it can effectively inhibit the transmission of mature melanin particles from melanocytes to keratinocytes, thus achieving the purpose of inhibiting melanin.
Extended data:
Whitening food:
Whitening traditional Chinese medicine diet therapy
Milk:
Milk is rich in nutrition, containing high-grade fat, various protein, vitamins and minerals, especially vitamin B group. It can moisturize the skin, protect the epidermis, prevent cracking and wrinkling, make the skin smooth, soft and tender, blacken the hair and reduce shedding, thus playing the role of skin care and beauty.
Kelp:
It can regulate the pH of blood and prevent the generation of oil. Ben Feng Jingyuan said that pork has the effect of "nourishing the liver and benefiting the essence and blood". According to the "Interesting Life Diet Spectrum", kelp has the function of "external thinness, carbuncle, fistula and hemorrhoids, which can be treated".
Food for whitening skin
pea
Eating more peas can dispel spots and raise beauty. Compendium of Materia Medica claims that peas have the effect of "removing black spots and making the face shiny". Modern research has found that peas are rich in provitamin A, which can be converted into vitamin A in the body.
Moreover, vitamin A has the effect of moistening skin, and it is taken from general food and will not produce toxic and side effects. Eating peas can also reduce swelling and stretch the skin, which can tighten the wrinkles around the eyes.
potato
About whitening vegetables, there is also the saying of "double beans", which are potatoes and peas. Potatoes are rich in B vitamins and a lot of high-quality cellulose, as well as trace elements, protein, fat and high-quality starch.
These ingredients play an important role in the process of anti-aging and disease prevention, and can effectively help women detoxify. Rich in vitamin C, it can restore women's whitening skin. In addition, the crude fiber in potatoes can also play a laxative role.
white radish
Chinese medicine believes that white radish can "benefit the five internal organs, make people white and clean muscles." White radish is a common vegetable, which can be eaten raw or cooked. It tastes slightly spicy. Has the effects of promoting digestion, stimulating appetite, accelerating gastrointestinal peristalsis, relieving cough and resolving phlegm.
So can white radish turn white? Because white radish is rich in vitamin C, vitamin C is an antioxidant, which can inhibit melanin synthesis, prevent fat oxidation and prevent lipofuscin deposition. Therefore, eating white radish often can make the skin white and delicate.
carrot
Carrots are called "skin food" and can moisturize the skin. It contains beta carotene, which can resist oxidation and whiten skin, remove excess cutin from skin, and also has calming and soothing effects on oily acne skin. Egg yolk and honey have moisturizing effect.
wax gourd
Wax gourd is a beauty product, which has a remarkable effect on whitening skin. Wipe your face with wax gourd slices every day or often wash your face with wax gourd pulp, which can make your facial skin delicate and reduce chloasma. This may be related to the contents of histidine, urease, vitamins and trace elements in melon meat.
lemon
The fruit rich in vitamin C must be lemon. Regular consumption can make the skin young, delay aging, whiten and lighten spots, shrink pores and soften the stratum corneum. It also has special significance for anti-cancer. It is said that eating only one spoonful of lemon a week can reduce the incidence of skin cancer by 30%.
The white skin of vegetables
When it comes to beauty, many people first think of going to a beauty salon. In fact, as long as you eat vegetables regularly, you can still make your skin radiant, and the effect is no less than going to a beauty salon! According to nutritionists, the following foods are beauty experts!
Peas: According to Compendium of Materia Medica, peas have the effect of "removing black and lifting noodles". Modern research has found that peas are rich in provitamin A, which can be converted into vitamin A in the body to moisturize the skin.
White radish: Chinese medicine believes that white radish can "benefit the five internal organs, make people white and clean muscles." The reason why white radish has this function is because it is rich in vitamin C.
Carrots: Carrots are called "skin food" and can moisturize the skin. In addition, carrots are rich in pectin, which can combine with mercury, thus eliminating harmful components in the human body and making the skin look more delicate and ruddy.
Asparagus: Asparagus is rich in selenium, which can resist aging, prevent and treat various diseases related to excessive oxidation of fat, and make skin white and tender.
Sweet potato: Sweet potato contains a lot of mucin and vitamin C. The content of provitamin A is close to that of carrot. Eating sweet potatoes often can lower cholesterol, reduce subcutaneous fat, tonify deficiency and qi, strengthen spleen and stomach, and benefit kidney yang, thus contributing to skin care and beauty.
Mushrooms: Mushrooms are nutritious, rich in protein and vitamins, low in fat and free of cholesterol. Eating mushrooms can make women secrete more estrogen, prevent aging and make skin gorgeous.
Bean sprouts: Bean sprouts can prevent freckles and dark spots and make the skin white.
Luffa: Luffa can lubricate the skin and prevent wrinkles.
Cucumber: Cucumber contains a lot of vitamins and free amino acids, and is also rich in fruit acid, which can clean and whiten skin, eliminate sunburn and freckles, and relieve skin allergies. It is a traditional beauty product.
Wax gourd: Wax gourd contains trace elements zinc and magnesium. Zinc can promote human growth and development, and magnesium can make people full of energy, rosy complexion and fair skin.
Fruit whitening
1, orange
Oranges and lemons are similar in nature and both are excellent whitening fruits. Now, when there are the most oranges in winter, eating more oranges can inhibit the melanin of the skin. Tips: However, oranges belong to "photosensitive food", that is to say, oranges easily absorb ultraviolet rays. Therefore, you should pay attention to sun protection!
Step 2: bananas
Banana is a very common fruit. Bananas can promote intestinal peristalsis and have a good laxative effect. Many girls look bad, which is often caused by bad stomachs and bad stools, so you can eat more bananas at ordinary times! Even if the skin is not good, your face will get better because of the smooth stool ~
3. Grapefruit
Grapefruit is a kind of nutritious fruit, and it is also a kind of hydrating and whitening fruit. Friends in dry areas need to eat more grapefruit, which can promote the metabolism of the body. Moreover, grapefruit is rich in vitamin C, which is also a very good fruit for whitening and beautifying, and it can also excrete toxins for the skin.
4.pierce
Sydney is rich in carotene, vitamins, citric acid, malic acid and other nutrients, which has the effect of moistening throat and resolving phlegm. Sydney can be used to make soup, and it is also a natural beauty whitening fruit.
5, peaches
Peach is a fruit that many people like to eat. Sweet and delicious. Peach is rich in fruit acid, which can not only replenish water for human body, but also bring benefits to skin, whiten skin and prevent pigmentation. Peaches can also prevent wrinkles, promote blood circulation and make the face more rosy.
6. Jujube
As the saying goes, "Eat three dates a day and you will never get old." Jujube is rich in vitamin C, E, carotene, organic acids, calcium, phosphorus, iron and other substances, which can effectively whiten the skin and prevent pigmentation.
7.carambola
Carambola contains fruit acid, which can prevent black pigmentation and effectively whiten and fade black spots. Moreover, fruit acid can soften cutin, promote skin metabolism and accelerate skin renewal, which is equivalent to "changing skin".
8.lemon
Lemon is a famous whitening fruit, which is rich in vitamin C. Friends who like to eat sour should eat a little lemon every day. However, many people can't adapt to the sour taste of lemon. Friends who are afraid of acid can drink a glass of lemonade every day. Remember, it's just cut lemon slices soaked in water.
9.strawberries
Strawberry is also a super effective whitening fruit, which tastes much better than lemon. Strawberries are rich in fruit acids and minerals. Eating more can not only whiten skin but also increase skin elasticity.
10, Kiwifruit
If you want to whiten your skin, the most important thing is to supplement your skin with vitamin C, which is the most effective whitening substance. The vitamins in kiwifruit are the most abundant and very popular fruit.
1 1, cherry
Cherry tastes good, too. Cherry is rich in vitamins A and C, which can effectively inhibit melanin. Eating cherries for a long time can make the skin whiter and more delicate. Drinking a glass of cherry juice every day can also improve skin quality and dull and yellow skin.
Baidu encyclopedia-whitening