"What are cosmetic preservatives? Are cosmetic preservatives bad for the skin? "Recently, the backstage Baozi asked me about the skin safety issues related to cosmetics and preservatives, and conducted an in-depth study of this, and compiled a relatively complete science popularization note, I hope it can help you on the road of skin care, it is not easy to sort out, it is recommended to like the collection and view!
When it comes to preservatives, many treasures have heard of it, because in the stereotype of the public, preservatives as a chemical substance can cause damage to the skin whether they exist in things, daily necessities or skin care products. So what are cosmetic preservatives? What are the preservatives in our daily skin care products?
Consumers have always admired natural and additive-free cosmetics, but natural skin care products cannot inhibit the growth and reproduction of microorganisms, so the storage time is also limited, and the presence of cosmetic preservatives can be a good preservative to avoid the nutrients in skin care products to produce bacteria, which can lead to quality spoilage. Especially for cosmetics with more moisture, the demand for preservatives is also relatively large, such as lotions, lotions, etc., in the same way, the substance is relatively close to the solid paste, and the microorganisms themselves are more difficult to survive, so the dosage and type of preservatives required are relatively small.
Formaldehyde and formaldehyde donors.
The essence of this kind of preservative is to use formaldehyde to achieve the effect of antiseptic, but after research, it is found that more than a certain concentration of formaldehyde will cause certain irritation to the skin, which will cause some dermatitis verification, some eye products, ** products, etc., which contain DMDM-hydantoin, quaternary ammonium-15, etc., for women with sensitive skin or in special periods such as pregnancy and lactation, need to be used with caution.
Parabens.
This type of preservative is currently the most frequently used class of cosmetics, including methylparaben, ethyl ester, propyl ester, butyl ester, isopropyl ester and isobutyl ester, etc., this kind of preservative adapts to acidic environments but will decompose in alkaline environments and lose their preservative effect. Therefore, when we use such cosmetics, we should pay attention to whether the acidic and alkaline environment used in the cosmetics conflicts with other matching products.
So do preservatives cause damage to the skin as rumored? How should we consider the presence of preservatives in cosmetics when choosing them?
In fact, not all cosmetic preservatives are bad, under the concentration specified in the national standard license, some safe and non-toxic preservatives are appropriately added to cosmetics to maintain and extend the shelf life of cosmetics, and the regular production of cosmetics will not have a negative impact on our skin, but for sisters who contain irritating preservative ingredients and sensitive skin and thin stratum corneum, they still try to minimize the use. To sum up, preservatives are not equal to harmful substances, and their safety is guaranteed as long as they meet the standards.
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In fact, it is precisely your heart that is afraid of difficulties that is difficult to overcome. As long as you adjust your mentality, no matter how far the road is, there will be a day to arrive, and no matter how high the mountain is, there will be a day to turn over. If the heart is full of sunshine, life will be bright everywhere.
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