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The little thing about whitening – phenylethyl resorcinol

    “Phenylethyl Resorcinol (PER, 4-(1-phenylethyl)1, 3-resorcinol)” When you see it, you’re probably thinking, “What the hell is this? What’s the word for it? Then there is no interest in watching, don’t worry, this series is only his original name, the reason why it is so difficult to pronounce, because it is completely synthetic ingredients, in fact, it also has a stage name, called “Symwhite 377”, may be no stranger to this name, many whitening products are based on “377” as the point of publicity, Although discovered relatively late, it is a powerful whitening ingredient.

    As a tyrosinase inhibitor, it’s 22 times more powerful than kojic acid, 50 times more powerful than arbutin, and it’s also an antioxidant — better than vitamin E or VITAMIN C. It is because of these two abilities that it is a powerful whitening ingredient.

    At the end of 2012, the State Food and Drug Administration (SFDA) officially approved this ingredient as a whitening ingredient for cosmetic additives.

    The highest concentration of phenylethyl resorcinol should not exceed 0.5%. In other countries, the concentration of phenylethyl resorcinol in cosmetics ranges from 1% to 3%. Some people in the use of it, the more serious of contact dermatitis, allergic problems, show the skin redness, itching, pain, such as performance, even can aggravate the pigmentation, so at the time of use, or try to start from the low concentration of product use, as long as can reach whitening effect, it is not necessary to choose higher concentration.

    And one of the ingredients that we talked about earlier, hydroquinones, is a very important ingredient in the history of whitening, and a lot of the chemicals, including phenylethyl resorcinol, are derived from hydroquinones.” Hydroquinone was actually one of his stage names, and his real name was hydroquinone. The diagram below shows its structure.

    In addition to hydroquinone, there are catechol and resorcinol for whitening. See the structure diagram below. We can see, above these 3 beautiful white composition is triplets simply, big dog child, 2 dog child, 3 dog child. Unfortunately, these three ingredients have been listed by the National Medical Products Administration as prohibited ingredients in cosmetics, mainly because they have great side effects on people, and even cancer risk. But it doesn’t matter, with these three foundations, we can also make four dogs, five dogs, six dogs……. And so you have the ingredients, phenylethyl resorcinol,

    According to this routine, there are endless whitening products, but in fact it is not so, a component can survive, need to consider his effectiveness, security, absorption, stability and other issues. Therefore, there are not many applications in the market at present, butylresorcinol and hexylresorcinol are among the outstanding ones.

    The whitening properties of these two ingredients are similar to those of phenethylresorcinol, both of which are very powerful, but are not currently approved by the CFDA for cosmetic use, so fairies need to be careful when choosing.

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