1、Cosmetics should not be kept at the right temperature and humidity. Cosmetics should not be kept in places where the temperature is too high, such as in the car or around the computer, and especially not in places where direct sunlight is easy to place cosmetics, because the ultraviolet rays in the sun are strong and penetrating, making it easy for cosmetics to oxidize and deteriorate. In addition, cosmetics should not be placed in places where the humidity is too high, such as bathrooms, where the humid environment is prone to microorganisms and bacteria, and where the frequent use of cosmetics makes it easy for bacteria and microorganisms to enter the cosmetics and contaminate them. Therefore, cosmetics should be kept in a dry and ventilated place with a suitable temperature.
2、pay attention to personal hygiene when using cosmetics, when using cosmetics, you should clean your face and hands, and then open cosmetics for use, try not to share cosmetics with others, if you really need to share, you can use a different cotton pad for a little sticky wipe, do not use common makeup utensils, easy to cross-infection of bacteria, may lead to skin allergies, but also make cosmetics infected with bacteria It may lead to skin allergies and make cosmetics infected with bacteria. Therefore, take care of your cosmetics, try not to give them to others, do your personal hygiene habits, and cover the bottle tightly after using them.
3、Clarify the shelf life of cosmetics. Before opening a new cosmetic, read the instructions carefully to clarify the date of manufacture and the shelf life of the cosmetic. Generally speaking, commonly used cosmetics can be kept at room temperature for about three to five years, but with the opening and use of cosmetics, changes in the environment, especially improper preservation, may make the shelf life of cosmetics greatly shorten, so it is best to ask the sales staff when buying cosmetics and ask for advice on how to properly preserve cosmetics, especially to use them while they are fresh for better results.
4、some cosmetics can be placed in the refrigerator, in general, has opened cosmetics do not need to be placed in the refrigerator for freezing, because open cosmetics are susceptible to bacterial infection inside the refrigerator, in turn, more unsafe. On the contrary, some unopened cosmetics, especially the temperature of special requirements of essential oils, or light-sensitive VC serum, and face masks and so on, these can be placed in the refrigerator for preservation, can effectively extend the period of use, to prevent cosmetics deterioration.