Will cosmetics deteriorate when exposed to heat?

Yes, cosmetics should not be stored in places where the temperature is too high. Because high temperatures will cause the oil and water of cosmetics to separate, causing the paste to dry out and shrink, causing deterioration.

In addition, when storing cosmetics, you should also pay attention to:

1. Sun protection: Cosmetics should not be stored in direct sunlight or light. Because light exposure will cause the water in cosmetics to evaporate, some ingredients will lose their vitality, causing deterioration. Ultraviolet rays in sunlight can also cause chemical changes in some substances in cosmetics, affecting the use effect and even causing adverse reactions.

2. Antifreeze: Cosmetics can be stored in the fresh-keeping refrigerator compartment of the refrigerator, but not in the freezer. In the cold season, it is not advisable to leave cosmetics outdoors or carry them outdoors for a long time. Because freezing will cause the cosmetics to crack

and after thawing, the oil and water will separate and the texture will become thicker, which will cause irritation to the skin.

3. Moisture-proof: Some cosmetics contain proteins, which are prone to mildew when exposed to moisture. Some cosmetics use iron covers, which can easily rust and corrode the cosmetics after getting wet, causing the cosmetics to deteriorate.

4. Long-term storage prevention: The validity period of general cosmetics is 1-2 years, and the storage period after opening is shorter. Therefore, it is best to use cosmetics within the expiration date and do not stop using them until they expire. No matter how good the cosmetics are, no matter how carefully they are stored, they will be worthless if they exceed the shelf life.

5. Anti-fouling: After using cosmetics, the bottle cap must be tightened in time to prevent bacteria from invading and multiplying. It is best to avoid taking it directly with your hands when using it. You can use clean cotton swabs and other tools. If you take too much at one time, apply it to other parts of your body and do not put it back in the bottle.