1. Generally not required: Most lipsticks can be stored at normal room temperature and do not need to be placed in the refrigerator. Ensure that they are stored in a cool, dry place away from direct sunlight to extend their lifespan.
2. Special circumstances may be considered: If the lipstick has not been used for a long time, or if the climate in the location is very hot and humid, it may cause the lipstick to melt or deteriorate. At this point, briefly storing lipstick in the refrigerator can help maintain its texture and stability, but it should be used as soon as possible after removal to avoid frequent temperature changes that can have adverse effects on lipstick.
3. Precautions: Lipstick placed in the refrigerator may develop water droplets or frost on the surface due to temperature differences after removal. In this case, wait for it to dry naturally before use. Meanwhile, it is not recommended to store lipstick in the refrigerator for a long time, as frequent temperature changes may affect the texture and color of the lipstick.