We all know that food has a shelf life, but there are not many people who can know the shelf life of cosmetics. Especially the detailed shelf life of cosmetics may not be known to you! In fact, cosmetics have a shelf life only for the length of time. Generally, cosmetics should be used up as much as possible. If you can't use it later, you should pay attention to whether the cosmetics have deteriorated. Once you find that it is the best way to lose it, don't use it again, or it will easily cause skin disease. Or bacterial infection!
Use cosmetics during the shelf life to prevent skin infections
There may be a lot of cosmetics that have not been used up when the season is coming. For example, the high-grade lipstick oozes sweat, the nail polish is a little dry, the perfume seems to have changed, the moisturizing effect of the emulsion seems to be not stable, and the acne gel has failed... ...Do you know what's going on? In fact, like all chemical mixtures, cosmetics are exposed to oxygen, bacteria, hot gases or due to humidity changes, which can react with the environment and affect their efficacy. However, you don't have to urgently clean the dressing table. You only need to know the reasons for the change in the concentration, taste and color of the cosmetics, how to prevent these changes, and when to throw them away, in order to accurately "change makeup"!
Preservation period of cosmetics
Do you know which cosmetics you can keep, and which ones must be discarded? Then look at the seasonal freshness period of each product. As for whether to completely update the cosmetics, then you must know the shelf life after the opening of the cosmetics!
Mascara, eyeliner, eyeliner, eyebrow cream: 3 months;
Shampoo, hair care products and shower gel: about 1 year;
Liquid foundation: about 1 year;
Perfume: about 1 year;
Lipstick and lip gloss: 1 year
Anti-aging and anti-acne products: 3 months;
Body lotion: 1.5 years, especially with the type of squeezer;
Sunscreen: Check the expiration date on the package. However, the sunscreen after opening is usually not suitable for continued use every other year.
Nail polish: half a year.
Are they deteriorating?
Even if the quality of the cosmetics changes, there is no need to discard it immediately, stir it or shake it. Of course, the best way is to throw away the new one.
Cosmetic problem: There are oil slicks on nail polish, liquid foundation, scrub, cream or sunscreen.
Main reason: In nail polish, the heavier specific pigment will gradually sink to the bottom of the bottle.
Tips: Nail polish and rubbing cream, can shake the liquid in time; liquid foundation, emulsion and cream floating oil layer are oxidation performance, it is best to discard, because they can cause allergies.
Cosmetic problems: liquid beauty products, perfumes, creams, gels, etc. have a layer of color.
Main reason: Cream will turn yellow because the fragrance is sensitive to light or the pigment fades, but it does not affect the efficacy of the product. However, for products containing active ingredients (such as anti-aging or anti-acne products), fading means that those ingredients have lost their effect. Vitamin C turns brown; vitamin A turns dark yellow; blue copper cream fades to yellow and brown.
Tips: If it is a perfume, then you can see that its color has become darker. This is the reason for oxidation. The best way is to throw it away. And moisturizers and shampoos are a pity for a month.
Cosmetics issues: perfumes, gels, lotions or creams give off strange tastes.
Main cause: Preservative failure. If the preservatives in the shower gel, night cream or sunscreen fail, the bacteria will breed and even cause fermentation. Perfume contains a lot of alcohol, so it is not easy to produce harmful bacteria, but bacterial growth can lead to infection.
Weapons: Once they change their taste, they are irreversible changes. Must be thrown away. No change of taste should be kept away from glare and overheating.
In addition, the air humidity of the bathroom is often high, and the high-humidity environment is not conducive to the safety of cosmetics. In the summer season, it is even prone to moisture, mildew and water. In addition to cleaning products, skin care products and cosmetics should be kept away from the damp bathroom. More commonly used cosmetics can be placed on the dressing table, and less used can be placed in the drawer. Buy now, don't hoard.
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