Walk into 377 (phenylethyl resorcinol) -- a new favorite in the whitening field

Tell us about the whitening ingredient 377 (phenylethyl resorcinol), which has become a net red. It is believed that everyone is familiar with phenylethyl resorcinol, which can be said to be one of the most widely used and effective raw materials among several resorcinol derivatives. Don't confuse it with hydroquinone (hydroquinone) and Rhododendron alcohol. Hydroquinone can't be used in cosmetics in China, and Rhododendron alcohol has also led to leukoplakia, which makes the brand kanboo pop quickly.

One of the key reasons why phenylethyl resorcinol has a good effect on improving skin color is that it has a bisphenol structure. For example, the familiar hydroquinone and resveratrol are components with bisphenol structure, which can play a competitive inhibition role on tyrosinase, so gradually improve skin color.

In addition, phenylethyl resorcinol has a bisphenol structure, so it is also a strong antioxidant and plays a very good antioxidant role. However, the disadvantage is that everyone knows that antioxidants sacrifice themselves to protect others, so if phenylethyl resorcinol is not formulated with other antioxidants and color protectors, it is easy to change color.

In brief, the effect of phenylethyl resorcinol is effective regardless of the in vivo and in vitro data. Although each raw material company has proved that it has low allergenicity and safety at a high proportion by patch experiments. However, the ingredients with such good whitening effect are not so friendly. Because it has a problem when it is applied, that is, tingling. In the application of cosmetics, phenylethyl resorcinol often makes people with poor skin barrier feel tingling in a short time, but it is not caused by allergy, it is pure irritation.

Speaking of the tingling sensation, we have to mention the dissolution of phenylethyl resorcinol in cosmetics.

The first is the polar oil solubility with good penetration effect, which can make phenylethyl resorcinol penetrate into the skin well and play its due role. However, in order to alleviate the tingling feeling during use, it is usually made into a thick oil cream;

The second is to dissolve with diols. The advantage of this dissolution method is to reduce the tingling sensation, but also to reduce the penetration of phenylethyl resorcinol, which is easy to precipitate on the skin surface, resulting in poor final effect.

Therefore, the phenylethyl resorcinol products on the market at present are either thick emulsion systems or alcohol soluble. Therefore, if it is conscientiously added to 0.5% of the highest domestic standard, consumers must be psychologically prepared to feel tingling for a short time. For normal skin, it is basically 0.1% ~ 0.3%, which reflects that the tingling feeling is weak.

In a word, if you want to buy phenylethyl resorcinol, you'd better be mentally prepared, especially for those with poor skin barrier, so just like using cosmetics containing a alcohol, slowly build up tolerance.