The shelf life of skin care products is different from other daily necessities. Generally, there are two shelf lives, one is unopened and the other is unopened. If the unopened skin care products are stored in a suitable temperature environment, their longest service life can reach three years. The shelf life of skin care products that have been opened has been greatly shortened to half a year or one year.
The best use period of skin care products after opening is half a year. If properly preserved, the skin care products themselves have no obvious deterioration and the service life can be extended to one year. In the meantime, carefully observe whether the shape and smell of skin care products have changed before each use. Deteriorated skin care products are far less fragrant and delicious than before.
And through the transparent bottle, we can find that skin care products are separated from the water and oil in the bottle. All these situations and phenomena indicate that serious deterioration has taken place in skin care products. Deteriorated skin care products used on facial skin will not only lose the moisturizing effect, but also cause allergic reactions such as redness and itching. So don't insist on using expired skin care products, so as not to become a tool for chronic disfigurement.