How to determine the cosmetics use period

Now a lot of women in the use of cosmetics manufacturer, but some women buy back a lot of cosmetics, but cosmetics use for a long time and not how to identify, so how to determine the cosmetics use period, let's together and see it. Numbers and the M】 The use of letters: after opening period. The first day of the by product in kaifeng, finished to kaifeng in specified period. The use of the product after opening period, also depends on the composition. Composition of pure natural, containing a small amount of preservative products, after opening the use of period will be shorter. Pay attention to the bottom of the product, there will be a small bottle, with Numbers and the inside M】 Letters. 【 M】 Letters on behalf of the month: and the preceding digit represents the kaifeng time. The use of the product after opening period is 12 months. Using the product batch number: online query production and due date. Sometimes product production and the due date, may not be listed on the packaging in detail, so we don't even know the product is due. Each product has the product batch number, actually consists of Numbers and letters, use this batch number, can query production date due date. According to the product category: estimate use time limit. Product categories and container, will have an impact on life. It is recommended to use 3 months: mascara suggest changing, every 3 months to prevent bacterial growth. Because mascara near contact with the eyes, so you need to change more frequently. Recommend the use of six months: air cushion foundation there are some products to the container, liquid eyeliner, can make foundation are more likely to come into contact with air and bacteria, such as air cushion, foundation, larger container bottle. These products cannot be stored for too long, also can only use 3 - after kaifeng 6 months, due to long-term exposure to air, can make microbial population multiplies, even has the possibility of bacteria levels. Use on the face, serious can make skin inflammation, long blain blain. You buy these products, remember to pay attention to health, and replaced periodically. Suggest to use 1 years and a half years: foundation, concealer and sunscreen. Deposit for the kaifeng should be 3 years, but after opening, can only use 1 year - A year and a half. It is recommended to use 2 years: lip gloss, eye shadow. In general, lipstick can use 2 years, if placed too long may be easy to get, texture becomes easy away, smell the smell, even carefully, if taste changes, even if cry to also want to throw it away. The above is to introduce the some introduction about how to determine the cosmetics manufacturer use period, hope to be of help.
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