The shelf life of Lancome's Little Black Bottle. Can Lancome's Little Black Bottle still be used after it expires?

Lancome's Little Black Bottle is a very popular skin care product on the market. Because of its excellent efficacy, many people like to use it. However, every skin care product has a corresponding shelf life, and Lancome's Little Black Bottle is no exception. So what is the shelf life of Lancome's Little Black Bottle? Can Lancome's Little Black Bottle still be used after it expires?

The shelf life of Lancome's Little Black Bottle is 12 months if it is opened. If it is unopened, the shelf life is 36 months, which is three years. The reason why the shelf life of an opened Lancome's Little Black Bottle is greatly shortened is that from the moment it is opened, some bacteria will enter the bottle. As the number of uses increases, the bacteria and contaminants in the bottle will only increase. Basically, you must use up the Lancome's Little Black Bottle within 4-6 months after opening it. This is to avoid acne or allergic reactions caused by using an expired Lancome's Little Black Bottle.

If you get acne after using Lancome's Little Black Bottle, it may be because the Little Black Bottle has exceeded its shelf life. Many young ladies are reluctant to use more of the Little Black Bottle and only use one drop each time. Although this is very economical, it is also likely to lose its skin care effect before the Little Black Bottle takes effect and harm the skin. When the Little Black Bottle exceeds its shelf life, not only will the bifida yeast fermentation product lysate in the Little Black Bottle lose its activity, but other ingredients will also begin to react with bacteria. The Little Black Bottle that has exceeded its shelf life may have become a culture medium for bacteria. When such a Little Black Bottle essence is applied to the face, it will cause the activation of acne bacteria and cause acne symptoms.

Yes, you can use it, and you can use the essence after using it. The point of the little black bottle is to help absorb the essence more effectively, but it is best to use only one. Also, if you use it during the day, you have to add a layer of sunscreen, otherwise once the ultraviolet rays come, no matter how good the things are, they will be useless. The correct order of using Lancome's little black bottle during the day is: cleansing - toner - Lancome's little black bottle essence - lotion/cream - sunscreen. Washing your face: Whether your face is oily or not, you still have to wash your face. After all, there will sometimes be a little dust or your own dandruff on our pillowcases and pillows. Therefore, it is recommended that you wash your face with clean water before using Lancome's little black bottle. Toner: Toner is to soothe dry skin after cleansing and lay the foundation for subsequent skin care procedures. Little black bottle essence: The function is to open the skin's appetite, allow the skin to absorb better, and penetrate the nutrients into the bottom layer of the skin. Lotion/cream: The texture of lotion and cream is different, but it is also to enhance the effect of the little black bottle essence. Sunscreen: Regardless of whether you need to wear makeup or not, sunscreen is a must because it is needed 365 days a year, which can largely prevent photoaging.

Oily skin can be used as an essence. For people with oily skin with thick stratum corneum, Lancome's Little Black Bottle can be used as an essence. Because for girls and men with oily skin, using a Little Black Bottle Essence and then adding an essence may make the skin feel a little burdened. So it's OK to use the Little Black Bottle Essence as an essence. On the other hand, if you usually take skin care seriously, and you don't feel your skin is sticky after adding an essence after using the Essence, then you can use the Little Black Bottle with an essence. It cannot be used as an essence for sensitive and red blood streaked skin. For people with sensitive skin or red blood streaked skin with thin stratum corneum, it is not recommended to use the Little Black Bottle as an essence (to be precise, skin with thin stratum corneum is not suitable for the Little Black Bottle). Because the Little Black Bottle Essence is a product with an exfoliating effect, for people whose stratum corneum is already thin or damaged, using the Little Black Bottle as an essence will damage the skin barrier and increase the frequency of skin sensitivity.