Can I still use expired lipstick?

Everything has a certain shelf life, including lipstick. The shelf life of lipstick is generally three years. If it deteriorates, liquid will overflow and there will be a certain oily smell. Expired lipstick should not be used on lips as it may cause allergies or even poisoning, but it can be used for painting or to clean black stains.

1. What are the symptoms of lipstick deterioration?

1. Lipstick is overflowing. Some people also call this phenomenon "sweating". If lipstick is not stored properly, such as in a hot or humid environment, the quality of the lipstick will deteriorate and liquid may overflow.

2. The lipstick has an oily smell. This phenomenon is more common in high-end lipsticks and is caused by rancidity and oxidation. Generally speaking, some high-end lipsticks will add natural ingredients such as high-grade grape seed oil and jojoba oil, which can easily produce a large amount of unsaturated fatty acids. When rancidity and oxidation occur, oily odors appear.

3. The product has exceeded its shelf life. Generally speaking, the shelf life of unopened lipstick is three years, while the shelf life of opened lipstick is less than two years. If the period has expired, do not use it again even if no problems are apparent.

2. How long is the shelf life of lipstick after opening?

The shelf life of lipstick is generally about three years. Usually when you buy lipstick, you can see the shelf life of the lipstick on the packaging, and this shelf life actually indicates how long the lipstick can be stored unopened.

The oils and waxes contained in lipstick are more likely to absorb impurities such as dust. Once opened, its shelf life will be easily affected. Therefore, it is recommended that opened lipstick can only be used for a maximum of 18 months or two years.

3. Can I still use expired lipstick?

If your lipstick is expired, even if you can't see it on the outside, the "inside" has changed. Therefore, some people will experience allergies, lip redness, swelling, and ulcers after using expired lipstick. This is not accidental, but inevitable. So, why is this?

Unlike skin care products, cosmetics contain more chemical synthetics. If they are expired, these chemical ingredients may deteriorate and produce harmful substances. If you use them without taking it seriously, it is very likely to induce lip allergies and poisoning.

Of course, some people may say, isn't it a pity to throw it away after it expires? You can use it as crayons to draw, or you can apply it on tissue paper to wipe silverware (just apply one layer), and then use a sponge dipped in detergent to wash it off to remove the black stains.