How to tell if a lip mask has expired? How long does it usually take for a lip mask to expire?

Skin care products all have a shelf life. Expired skin care products should not be used. The same goes for lip masks. Continuing to use expired lip masks will irritate and damage the lip skin, causing damage to the lip skin and even severe allergies.

1. Look at the surface: This is the simplest way to judge. Check whether there are mold spots on the lipstick. Some lipsticks contain more protein. In spring and autumn, the suitable temperature and humidity conditions are very likely to allow fungi and bacteria to grow, causing the lipstick to mold.

2. Smell: Expired or spoiled lipstick will have a pungent and strange smell. This is because the bacteria decompose cosmetics, which is a process of organic fermentation. Among them, the acidification reaction will emit a rancid smell, which will cover up the fragrance of the lipstick itself and will be very unpleasant.

3. Look at the color of the lipstick: If the cap is not fastened tightly after use and the lipstick is left directly in the air, it will invisibly provide an opportunity for the growth and reproduction of bacteria. The pigments produced by bacteria during their growth and development can turn the lipstick yellow or black.

4. Check the properties of the lipstick: Check whether there are water droplets on the surface of the lipstick, or whether the paste has dried up. This is generally caused by improper storage. For example, if the cosmetics are exposed to cold or heat for a long time, the oil and water will separate; if the paste is placed in the sun for a long time, the moisture in the paste will evaporate, causing the paste to dry out.

The general shelf life is 3 years. Remember this. There are two types of shelf life for cosmetics. One is marked, which is the date calculated by the cosmetics R&D personnel. However, there is another date, that is, if the cosmetics are not opened, they can be used even after the shelf life. Generally, they should be used up within 150 days after opening, but it still needs to be analyzed according to specific problems. If the skin of MM is about the shelf life of the mask, the shelf life of cosmetics is generally three years, but for the sake of good skin, don't leave it for too long. Use it quickly and don't waste the good stuff. If the lid is opened, it's another matter! Generally, 1-3 times a week is enough, and the number of times should not be too many. The "mask" for the lips often contains exfoliating enzymes and functional ingredients that moisturize the lips. The purpose of using a lip mask is to moisturize, soften, and remove aging cuticles, provide nutrition and luster to the lips, and dilute the pigmentation of the lips.

Lip mask is simply a mask for our lips. Generally, lip mask can protect our lips. After use, it can remove the aging cuticle of our lips and make them more elastic. But if the lip mask is expired, it is very likely that it will no longer have such effect. Generally, the shelf life of Laneige lip mask is three years, but if it is an opened Laneige lip mask, try to use it up within one year. If it is not used up, do not use it, because the ingredients may change, and forcible use may cause allergies to our lips. It will not work on our lips, but if you think it is too wasteful to throw it away, you can still use it as a hand cream in the short term.

A Laneige lip mask can be used for several months. Once the skin care products are opened, they need to be used up within one year to prevent deterioration. Winter is coming, you should need it. Many people will ignore the care of their lips, so there will inevitably be accumulated keratin on the lips. You deserve the Laneige Jelly Sleeping Lip Mask. If your lips are dry for a long time, apply it on your lips at night, and your lips will feel pink when you wash it the next day. A small spoon is included. It looks like a small box of 20g. You only need a small spoon at a time. If you use it 2-3 times a week, it can be used for half a year. It is very durable!