If skin care products are frozen, they can be used in principle, because there is no chemical reaction in cosmetics, but after freezing, the moisture and nutrition of skin care products will be separated. Although the moisturizing effect inside may not be affected, the hydrating effect will be greatly reduced. Skin care products are generally easy to deteriorate at high temperature, such as liquid discoloration and odor change. It is mainly composed of vitamin C, alcohol A, resveratrol, grape polyphenols and gallic acid. They are very afraid of "high temperature" After discoloration and degradation, it is not so simple that it has no effect. Its degradation products may also irritate the skin!

Cosmetics such as facial cleanser are frozen and can be used when they are melted, but if they are water and milk, it is not certain whether they can be melted. Water and milk are bound to freeze into popsicles at such a low temperature, and most of them are bottled in glass. Regular cosmetics will pass the minimum test of MINUS 15 degrees in the inspection process to ensure the stability of the products. Although higher or lower than this temperature will accelerate the deterioration time of the product, it is good to use it as soon as possible.

Toner, toner, this can be used, but use it as soon as possible. For example, some products have active ingredients. Once subjected to high temperature or ultra-low temperature, their activity will be reduced or even lost. Such a product is invalid!

The temperature is relatively low in winter, especially in the north. The temperature of the product is very low during transportation, so long as water freezes at low temperature, skin care products are generally recommended to be stored at low temperature and normal temperature, so freezing will not affect the use of any water-like skin care products. The ingredients will change, the effect will be different, but the efficacy may be greatly reduced. It is recommended to store toner at room temperature.