Cosmetics Preservation Concepts 
The "expiry date" printed on the product refers to the latest time it can be used in an unopened state and in a reasonable storage environment. However, this does not mean that it will not deteriorate before this time. The product will be affected by environmental conditions, such as temperature, humidity, and whether it is exposed to sunlight. Extreme changes in any condition may cause product deterioration and shorten the shelf life.
Product deterioration phenomena:
- Odor appears
- Color change, such as turning yellow or black
- Appearance changes, such as agglomeration, oil-water separation
Correct storage and use:
- Store in a cool place away from direct sunlight
- Recommended storage temperature: 15℃~25℃, and do not change too much
- Clean your hands before use and make sure your hands are clean
- For creams, use a dipping stick instead of using your hands directly.
- Lock the lid tightly after use
- Avoid dispensing, as each dispensing process may cause contamination
- Do not dilute cleaning products with water yourself, as this may affect product quality and increase the risk of microbial breeding.
- Contains temperature-sensitive active ingredients, such as vitamin C, resveratrol, etc., which can be stored in the refrigerator to maintain product activity.
Different types of products have different validity periods after opening. The following table provides reference.
|
產品類型 |
開封後有效期間(POA) |
|
Dry powder (eye shadow, powder, powder, blush) |
1~2 years |
|
Eye cosmetics (mascara, eyeliner) |
3 months |
|
Lipstick |
6 months~1 year |
|
Water-in-oil formula(sunscreen lotion, liquid foundation) |
6 months |
|
Skin care (toner, lotion, essence) |
6 months~1 year |
|
Cleanser |
1 years |
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