The following points should be noted when storing essences:
Storage environment: Essences should be stored in a dry, cool, dark place, away from direct sunlight or high temperature to prevent them from deteriorating or reducing their effects. Temperature control: The storage temperature of essences should be between 5-25 degrees Celsius, and avoid exposure to too high or too low temperatures to avoid affecting their quality and stability. Avoid contamination: Before using the essence, make sure your hands are clean and avoid contact with contaminants on the bottle mouth or the inside of the liquid. After each use, seal the bottle mouth to prevent air and bacteria from entering. Avoid mixing: If using multiple essences, do not mix them together to avoid chemical reactions that cause quality changes. Expiration date: Essences usually have an expiration date after opening. It is recommended to use them up within 6 to 12 months after use to ensure the best effect and safety. Store in the refrigerator: Although it is generally not recommended to store essences in the refrigerator, because refrigeration may cause changes in its consistency and affect the effect of use, essences containing highly active ingredients such as vitamin C can be stored in the refrigerator at a temperature of about 4°C.
Essences with different ingredients have different storage requirements:
Essences containing vitamin C and its derivatives: This type of essence is easily oxidized and degraded, and it is recommended to be stored in the refrigerator at a temperature between 5°C and 10°C.
Prototype VC (vitamin C): Due to its high activity, it is easy to lose activity and is usually stored in a refrigerator at 4°C.
The above measures can effectively extend the shelf life of the essence and ensure its effect.