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Ever since time immemorial, the people of the land have taken white as a beauty, and the concept of white as an ugly thing has gone deeper. Summer inflammation, and little sister amy's make-up table always has white makeup。
White and white axes: covering, inhibiting, excretion
Cosmetics generally refer to cosmetics that contribute to the reduction or abating of skin skin-colouring or to the achievement of skin whiteness through physical cover. There are three main principles。
Physical cover
Physical cover, which, by definition, covers the skin surface (e. G. Titanium dioxide, zinc oxide, skating powder or similar white powder) by painting white cosmetics, to the extent that the skin is covered with defects and whitening, without changing the skin itself。
2. Inhibiting the production of melanol
Skin molan content and distribution affect skin colour, with the main raw material of synthetic melanone being greasine, which is hydroxylized with cheese ammonium enzyme and is reoxidated to doba, which produces non-coloured dobacolin through multiple polymeric reactions and a range of other reactions, leading to melanone, inhibiting or reducing the activity of the greamase, and removing oxygen free radicals prevents the catalytic reaction of greamase, thereby reducing the intensity of the oxidation response. The most widely applied skin whites, such as curric acid, bear nuts, aeromide, etc., are currently cheesyase inhibitors。
3. Promoting rapid discharge of melanol
There are two main routes for black excretion, one of which is excreted from the kidney by blood circulation after its decomposition, dissolution and absorption in the skin, and the other of which is excreted from the aging horny cells. If black is excreted at a lower rate than the rate at which it is generated, skin is easily coloured, and accelerated black is released in turn to achieve skin whiteness. At present, components such as yogurt, ols and vitamin c are usually added to cosmetic formulations to increase black excretion rates by promoting cell metabolism。
Don't let the special effects get blindfolded
In 2019, the national drug regulatory authority (nda) sampled seven sub-standard plastered white products, and found that two of them used hormone components such as chlorobetrapropaate and betamone and four excess mercury. The long-term use of hormone-added cosmetics can cause abnormal skin sensitivity, turn into a hormonal face, trigger dependency dermatitis, cause serious damage to the nervous system, etc. The long-term use of mercury-exceeded cosmetics may cause neurodepressive syndromes and kidney damage, etc。
Cosmetics require the declaration of white and white effects, etc., in accordance with the requirements of the cosmetics declaration guidelines, and the national drug regulatory authority states that “medical white”, “fast white”, “seven days white”, etc., are all violations, and that the immediate effects of this may be accompanied by the illegal addition of prohibited elements such as hormones. So in front of the screen, you have to shine your eyes when you're buying white makeup
White makeup selection tips
Rational selection
Consumers should rationally choose their skin-care products, and white cosmetics are not as expensive as they are or as high as technology. They are recommended to be purchased through formal channels such as brand official websites, physical stores, etc., paying attention to the date of production of the product, its shelf life, composition sheet and instructions for its use, and to the completeness of the overpacking of the product and to avoid the purchase of counterfeit and false products。
Scientific use
To ensure that your skin type and demand are appropriate, a small area test is conducted on the skin before new products are used to check for allergies or irritant reactions. The frequency of use is determined on the basis of product description and skin tolerance. It can start with one or two times a week, gradually increasing frequency. The acid may accelerate the loss of moisture in the skin, so that it is used for wetting and uses wetting cream or emulsions。
The use of skins by sensitive muscles should be discontinued immediately if there is any discomfort, such as red and red。
3. Focus on sunproofness
Ultraviolet exposures induce the formation of black and lead to a deepening of coloured sediments, so that the use of white cosmetics should be reduced to a minimum, and it is recommended that sun-proof cosmetics be used in conjunction with the spring and summer holidays。
We can't over-exploit. The key to skin health is to keep a healthy lifestyle
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