What kinds of preservatives are there for cosmetics 2
Preservatives are agents that prevent the growth and reproduction of microorganisms and prevent decay. Certain measures are taken to prevent the propagation of microorganisms. Practice has proved that the use of Ji 'nan Casson preservative is one of the more economical and simple ways to achieve the above purpose.
The preservatives in cosmetics are commonly known as casson and are widely used in the preservative protection of wash off cosmetics.
Generally, the higher the concentration of the preservative used, the better the effect. When the amount of preservatives is high, it can directly destroy microorganisms. When the amount of preservatives is appropriate, it can prevent the growth of microorganisms. However, when the amount of preservatives is too high, the human body will produce uncomfortable reactions. When a preservative is added to a product, it should also be considered whether it has good stability in the new system. Therefore, in the formulation of cosmetics, many factors in cosmetics that affect the effectiveness of preservatives should be considered.
For different cosmetics, the preservatives used are also different. With the continuous improvement of production technology, the types of preservatives are increasing.
The preservatives commonly used at present are p-hydroxybenzoates, imidazoll urea, phenoxyethanol and cassone.
