Shelf life of lipstick
Each product has its own shelf life, and the shelf life is usually divided into unopened shelf life and opened shelf life, and the same is true for lipsticks.
If it is an unpacked lipstick, it is best to use it up within a year, mainly because the opened lipstick will be in direct contact with the air, more or less will be stained with some bacteria, which may affect health after use;
if it is not unpacked If so, use it up for three years.
1. How long is the shelf life of lipsticks?
Usually about three years
About the shelf life of lipsticks Generally speaking, the main ingredients of lipsticks are beeswax and grease, which can guarantee that they will not deteriorate for many years, so the shelf life of unopened lipsticks is about three years, but the shelf life of lipsticks after opening is greatly shortened. Once opened, of course The sooner it is used up, the better.
There are two cases of lipstick "expiration". One is that it has passed the production shelf life or the opening shelf life, and the other is that the lipstick has deteriorated during the shelf life due to various reasons. No matter which one has expired, it is not recommended to use it.
2. How to maintain lipstick can extend the shelf life
Moisture proof
A humid environment is a big no-no when it comes to preserving cosmetics, and lipstick is no exception. In order to ensure that the active ingredients of the lipstick are not damaged, the place where these lipsticks are placed should be ventilated every day, and remember to tighten the cap after use.
High temperature
Strong ultraviolet rays can easily oxidize the oils and fragrances in the lipstick, destroy the pigments, and thus make some components lose their vitality. Some lipsticks will deform or even melt when exposed to sunlight. So, keep your lipstick out of direct sunlight.
Anti-pollution
When taking cosmetics, it is easy to contaminate the cosmetics. Don't clutter lipstick and other makeup products together, it's better to keep them separate.
3. Can the lipstick still be used after it has expired?
Lipsticks that have expired cannot be used.
If the lipstick has only expired soon, and it has only been applied 1-2 times, there may be no symptoms at all, but it is good to stop using it as soon as it is discovered. However, some people have allergic symptoms after using expired lipstick, such as redness, swelling, itching, and even festering in severe cases. At this time, timely medical treatment is required.
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