According to the results of 2010 survey conducted by the US Food and Drug Administration (FDA), the proportion of formaldehyde used in cosmetics is as high as 25%. Four bottles of cosmetics contain formaldehyde 1 bottle.
Most of the formaldehyde detected in cosmetics is not directly added to formaldehyde itself, but a formaldehyde releasing agent. Mainly through the slow release of a small amount of free formaldehyde in the cosmetic system to kill microorganisms.
Although formaldehyde in cosmetics and daily hygiene products can often contact the human body through the skin, it is difficult to enter the body, and its effect on the body is limited to the contact site and its closely contacted cell layer. However, when the exposure exceeds the normal metabolic capacity, formaldehyde can enter the blood, which may have toxic effects on kidney, liver and hematopoietic tissue, resulting in multiple system damage.
Therefore, China has strict standards for the maximum content of formaldehyde in cosmetics and other products. Taking cosmetics as an example, the maximum allowable content of formaldehyde and paraformaldehyde in cosmetics is 0.2% (calculated by free formaldehyde), and it is forbidden to spray cosmetics.
At present, the country does not prohibit the release of formaldehyde preservatives, but only limited preservatives. In addition, the country mainly detects health indicators such as colonies.
Extended data
Choice of cosmetics:
1. Cosmetics related to hair dyeing, perming, whitening and freckle removal, manicure, lip beauty and breast augmentation often contain a lot of chemicals, which are likely to cause harm, and need detailed consultation to understand the situation.
2. Choose high-quality cosmetics: First, pay attention to check whether the cosmetics have trademarks, production dates, manufacturers' names and hygiene license numbers.
Don't believe in advertisements, especially those that say they have magical effects, which may contain some chemicals with miraculous effects but huge side effects.
4. Anti-allergy: Before choosing a new, unfamiliar or never-used cosmetic, you should do a skin test, such as a small area on the back of your hand, to test whether you are allergic. Only when there is no redness, itching and other reactions can you choose.
5. Pay attention to the shelf life: Cosmetics contain substances such as fat and protein, which are easy to deteriorate or be infected by bacteria after a long time.
6, pay attention to the details of use: different brands, different series, different types of cosmetics, do not mix, so as not to produce adverse reactions or bad smell.
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