In the sensitive season of spring, many people choose not only the "moisturizing, beauty" and other functions, but many skin care people are more concerned about the pH of toiletries. There are many posts on the network to test the pH of toiletries, and therefore the sales of pH test papers with a test of pH have been brought hot. However, skin experts said that in fact, the choice of skin care products and toiletries does not have to pay too much attention to pH.
Skin care people are keen to test pH
"Do you know the pH of your skin care products?" This sentence has become a common language used by many skin care people to meet each other.
On March 9th, the reporter found in many online beauty forums that the posts that test the bath and skin care products have become popular posts, and there are many viewers. Some of the posts describe "pH test strips are also a good helper for skin care enthusiasts," because "the skin surface is acidic, pH 5.5 or so, so toiletries and skin care products should be acidic instead of alkaline." .
In the online shop, the reporter found that pH test papers are also popular because they can test the pH of skin care products. The pH test paper sold in a Taobao shop can be labeled as “testing the pH of skin care productsâ€. In the introduction, the owner said, “If we use the cosmetic products, if it is alkaline, our face will become dry, sensitive, cold and purple, hot and red, and easy to make small acne. It is strongly acidic and there is a danger of being destroyed (too scary). Because our skin is weakly acidic, the most suitable cosmetic product for us should also be weakly acidic because it is most easily absorbed by our skin. ".
The reporter noticed that the store's pH test paper sold 177 pieces within 30 days, and was evaluated by many buyers as "a good helper for choosing skin care products."
Commercially available toiletries are less acidic
Although skin care professionals are claiming that weakly acidic toiletries and skin care products are the best, according to this standard, it is currently difficult to buy the corresponding toiletries in China.
Professor Wang Xuemin, a member of the Cosmetics Standards Committee of the Ministry of Health and vice president of the Shanghai Dermatology Hospital, said that in his experience, the shampoo on the market so far, the shower gel is also good, in fact, it is completely acidic. Both are relatively low alkaline or neutral.
In fact, experts do not agree with the view that “the choice of toiletries is too acidic†that skin care people admire. Wang Xuemin believes that the pH of toiletries in the past is actually controversial. But now the results are very clear, that is, simply using pH to judge toiletries is not scientific. Numerous clinical studies have demonstrated that it is not the only pH to determine its cleansing power and safety or its emollient effect.
Wang Xuemin explained that it is not that the use of alkaline toiletries to wash the skin will have a great impact on the skin. Toiletries are ready-to-clean products with a good cushioning capacity on the skin surface. If used correctly, neutral or alkaline should not produce immediate or cause a very bad effect on the skin.
After the bath, I feel that the acid and alkali are not scientific.
Due to the enthusiasm of skin care enthusiasts, many merchants will also emphasize the weak acidity of the products when promoting the products, but most toiletries and skin care products are not labeled with acid and alkali, so some skin care people will also introduce some stickers. Shi, said that the greater the alkali, the stronger the oil, the acidity is basically no oil removal, the oil removal is very weak. If you feel that your skin is dry and the oil is gone, it proves to be a very alkaline soap or body wash. If it is still oily after bathing, there is no feeling of dryness. Maybe it is neutral. Or slightly acidic.
In this regard, Wang Xuemin said that many bath products are especially emollient or non-soap-based. After washing, there will still be a smooth feeling, but it may not be acidic. In addition, if the surfactant is used as a general bathing agent, most of the feeling after bathing is smooth.
Wang Xuemin said that the skin does not need to be decontaminated so strongly, and most of it is neutral.
He believes that in order to keep the skin moist, in addition to the selection of relatively mild and safe products, the relative evaluation of irritability is also more important, to choose a relatively less stimulating bath products.
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