Usually, the shelf life of cosmetic products is 3 years. Shelf life after opening can range from 3 months to 2 years. Generally speaking, solid cosmetics with unique ingredients have a longer shelf life, while liquid cosmetics with complex ingredients have a shorter shelf life.
The main problem with cosmetics that have passed their shelf life is microbial contamination. After prolonged contact with air, the active ingredients may undergo chemical changes, which can lead to potential damage. for the skin. Therefore, whether from the point of view of safety, effectiveness and comfort of use, it is emphasized that cosmetic products should be used within the shelf life.
Shelf life of different types of cosmetics:
Toner/Lotion: Within one year after openingure (store in a cool place)
Essence/Essence: After opening Within 8 months after opening (store in an opaque place)
Face cream: within 1 year after opening (store in a cool place near room temperature)
Base/primer cream: Within one year after opening (store in a cool place near room temperature)
< p>Foundation/covering powder/concealer: Within 1 year after opening (store in a dry, cool place)Foundation/covering powder: within 3 years after opening opening (clean the puff frequently and replace it with new products)
Eye shadow/blush: within 5 years after opening (creams should be used within 1.5 years). years)
Lip gloss: within 6 months
Lipstick: within 2 years
Eyeliner: within 1 year (eye- liner should be washed or wiped with wet wipes) before and afteruse)
Facial cleanser: Within 1 to 1 and a half years after opening (use a spatula for creams)
Sun cream: Within 4 to 12 months after opening (keep in the refrigerator)
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Nail polish: within one year of opening
Certain varieties of products have different shelf lives , so be sure to check the instructions carefully.
Detailed information:
First, bacteria can easily reproduce.
Products such as lipstick and mascara contain a large number of organic ingredients. If past their shelf life, these organic ingredients can easily become a food source for certain bacteria. In this way, lipstick and mascara will become a fieldfertile for bacteria. If they are used on people's faces at this time, they will become a breeding ground for bacteria. easily cause some bacteria inflammation, so we should always be careful of these expired products.
Second, efficiency is reduced.
For example, the shelf life of sunscreen is approximately one year. After this shelf life, it loses its sun protection function at that time, and it can clog pores. .
Third, it causes skin allergies.
Things like foundation, expired products, some chemicals will undergo subtle changes. Applying them to the face at this time can easily cause facial allergies, ranging from redness, swelling and acne to skin ulcerations.
People's Daily Online - Talk about the shelf life of cosmetics
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People's Daily Online - How long is the shelf life of cosmetics? What should you pay attention to when cosmetic products are expired
Yeast water lotion is a popular skin care product that has the effects of moisturizing, nourish and soothe the skin. In order to ensure the effectiveness and stability of the aqueous yeast lotion, correct storage methods are very important.
We need to pay attention to the storage temperature of yeast water lotion. It is best to place it in a cool, dry place away from direct sunlight. Too high or too low temperatures can affect product quality. Please do not store yeast water lotion in a humid environment to avoid bacterial growth.
We must pay attention to the container in which the yeast water lotione is stored. Choose a tightly closed bottle or container to hold the yeast water lotion to prevent air and dust from entering the bottle. Be sure to wash your hands and face before use, and use a cotton pad or cotton ball to apply an appropriate amount of lotion.
Third, we can also consider storing yeast water lotion in the refrigerator. This will not only extend the shelf life of the product, but also give it an additional soothing effect. But you should know that you must remove the lotion before each use and wait for it to return to room temperature before using.
It is also very important to clean storage containers regularly. When we use yeast water lotion, we often touch the neck of the bottle or pour the lotion with our hands, which may cause growth.bacterial ance. To avoid this, it is recommended to wash the container thoroughly with a mild detergent once a week and ensure it is completely dry before use.
We must remember to use yeast water lotion in time. Cosmetics usually have a certain shelf life after opening, once the shelf life is exceeded the product may deteriorate. Therefore, when purchasing, try to choose a suitable capacity quantity and use it as soon as possible within the shelf life.
Correct storage methods can help us maintain the effectiveness and stability of yeast water lotion. By paying attention to temperature, choice of containers, storage in the refrigerator, and regular cleaning of containers, we can better use yeast water lotion to care for our skin and enjoy the wonderful results it provides.brought. It is recommended to choose Fresh Rose Flower Essence Water as your yeast water lotion. Its effect has been recognized by dermatologists and is appreciated and praised by many consumers and bloggers. Affordable and effective. I hope the suggestions above are helpful to you.