How long can lipstick be kept after opening? Does lipstick expire?

April 21, 2023
Lipstick is now the favorite makeup product of many girls, and many people will even buy many kinds of colors of lipstick at home at once.

How long can lipstick be kept after opening

Lipsticks usually have a shelf life of 3 years, but some boxes of lipsticks have a shorter shelf life because of their large exposure to air. Generally speaking, the shelf life of lipsticks after opening is indicated on the product packaging, if it is 18M, it means the shelf life is 18 months, and 24M means the shelf life is 24 months.

How long to use up lipsticks after opening

Today's lipsticks, lip glosses are not only extremely colorful, moisture retention is also very good, gradually surpassing lipstick to become the most favorite lip makeup products for girls. However, the texture of these products is sticky and fragrances are added, so in order to avoid the deterioration of the sticky liquid, it is recommended to use it up within a year after you start using it!

The dangers of not using up lipstick in time

The oils and waxes in lipstick have strong adsorption properties and can adsorb dust, viruses, bacteria and other harmful substances in the air on the mucous membrane of the mouth and lips, which can enter the body with saliva when eating, drinking or even speaking. Although lipsticks sold on the market must be tested for safety beforehand, there is still a risk of allergic reactions to users due to the differences in color and formula, as well as differences in individual constitution. Lipstick causing lip allergy has been a very common problem, with about 10% of women experiencing dry lips, burning, swelling, itching, peeling of the epidermis, and mild pain after using lipstick.

What are the harmful substances in lipsticks?

Most of the dyes commonly used in lipsticks are non-food colors that are harmful to humans, and some poor quality dyes also contain carcinogenic chemical ingredients. In addition, some lipstick manufacturers add a lot of heavy metals to lipsticks to make them look more colorful and less likely to fall off, including lead, mercury and other elements, which are very harmful once they enter the body.
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