Will cosmetics deteriorate at high temperature?

In hot weather, many girls are worried that cosmetics will not go bad at high temperature. In fact, cosmetics will not go bad during the shelf life as long as they are unopened. Many girls don't know how to judge whether cosmetics have gone bad. So, will cosmetics go bad at high temperature? How to judge cosmetic deterioration? Let's look at the introduction of the article.

1, the method of judging cosmetic deterioration

Cosmetics will go bad at high temperature. From the moment the bottle cap of cosmetics is opened, its life has entered a "countdown" state. Especially in such hot summer, they will accelerate deterioration. They are afraid of bacteria, sunlight, overheating, supercooling, humidity and failure. Therefore, storing them according to their weaknesses can prolong their service life and slow down deterioration.

1, eyeliner and eyeliner

If there is a bald head at the tip of MM eyeliner that cannot be cut off, throw it away. If the eyeliner is easy to take off makeup, this is the overdue signal of the eyeliner. The life of eyeliner is less than half a year, and the life of eyeliner is generally around 1 year.

2. mascara

Generally speaking, it is safer to change mascara every 3 to 4 months. Remember to stop using MM's mascara immediately when it smells like gasoline, or when it is tangled into a ball and granular objects appear on the eyelashes.

3, eye shadow

In fact, the shelf life of powdery eye shadow is generally about two years. Remember to clean the eye shadow brush regularly, otherwise it will bring a lot of bacteria into the eye shadow tray. If MMs are used to applying eye shadow by hand, they must wash their hands before making up.

4. Liquid foundation

Liquid liquid foundation is a hotbed of bacteria. Liquid foundation that has never been opened can be stored for many years. Once opened, it must be used up as soon as possible within six months to one year. The expired liquid foundation will give off an unpleasant smell and its color will change, indicating that the oil composition inside has changed, which will greatly stimulate MM's skin.

5. Concealer

Like liquid foundation, expired concealer will change color and look oily when applied to the skin, because the oil of expired concealer will float to the surface. The life of concealer is no more than one year.

6. Loose powder and honey powder

The shelf life of ordinary honey powder and loose powder is about 2 to 3 years. Some loose powder containing plant essence will contain a small amount of water, so it must not be placed in a humid place like the bathroom to avoid breeding bacteria. If your loose powder and honey powder agglomerate, turn gray or turn green, just throw them away.

2, the correct preservation of cosmetics

1, facial cleanser

Causes of deterioration: usually stored in the bathroom, frequent bathing in summer, high humidity in the bathroom. Water will cause bacteria in facial cleanser containing lipids or protein to multiply and deteriorate.

Solution: Don't put facial cleanser in the bathroom in summer, keep the bathroom ventilated and cover the facial cleanser in time.

2. Toner

Deterioration reason: It was actually warm when I went to the counter to try the emulsion in summer, but it was actually heated by the lamp of the counter. It should be noted that the lotion should not be placed near the light source, especially in the direct sunlight, and it is easy to deteriorate at high temperature.

Solution: Make-up water products can be put back in the original packaging box and placed on the lowest floor of the refrigerator, not directly by the door of the refrigerator, because the exchange of hot and cold air is the easiest to deteriorate the products.

3. Cream or essence

Reasons for deterioration: Many lotions, creams or essences with whitening or anti-aging effects will contain VC and alcohol A, which are sensitive to deterioration.

Solution: Before storing cream-like skin care products, wipe the bottle mouth and bottle cap with alcohol-containing emulsion or 75% diluted alcohol, then put them back in the original packaging box and store them in a cool place (no need to put them back in the refrigerator). After such treatment, not only the quality of the product can be maintained, but also some residual bacteria can be killed.

4. sunscreen

Deterioration reason: Many people like to put sunscreen in their cars in summer, but under the sunlight, the plastic will deform or even melt, releasing chemicals and polluting the sunscreen twice.

Solution: Don't put it in the car!

5. Lipstick

Misunderstanding: Lipstick sweats in summer because the main components of lipstick usually contain antioxidant components such as vaseline, wax, oil, pigment, vitamins A and E, which will melt at high temperature.

So it's not that there is something wrong with your lipsticks, but that they are also "afraid of heat"!

Solution: Be sure to put it in an air-conditioned room in summer.

3, night whitening skills

1, washed white and smooth

Working during the day not only consumes a lot of brain, but also consumes a lot of skin on the face. Dust in the air, computer radiation and unknown bacteria lead to the rapid loss of skin moisture, making the skin look dull; A lot of dust, adsorbed on the skin, blocks pores, and makes the skin look dull more easily. So whitening was achieved.

2, whitening.

Many girls ignore the function of toner, which is quite wrong! Toner has a good cleaning and hydrating effect. Use toner or toner for secondary cleaning to thoroughly remove the residue of cleaning products and promote the skin's ability to absorb the next product. Better improve skin quality through toner, so that the skin can better absorb the next product. At the same time, it can also replenish water well! When the skin is tender, it will naturally appear whiter!

3. Wipe out whitening

Pale, dull face, of course, does not mean that simple washing can solve the problem. You must use some magic weapons to whiten your skin. After thoroughly cleaning the skin, let the skin absorb nutrients and restore charm and ruddy, which is the key. The use of night whitening and whitening night cream is particularly necessary! Let the skin absorb the whitening essence of whitening cream at night and wake up white!

Step 4 use whitening products

Mask is a good whitening product. Using whitening mask can make facial skin absorb better and promote skin metabolism. That's how whitening comes about.