Can skin care products still be used if they are frozen? How to mail cosmetics in winter so that they will not freeze?

Skin care products are liquids. Liquids will freeze when they are in a cold enough place, even if there are a lot of impurities in them. So, can skin care products still be used if they are frozen?

Can skin care products still be used if they are frozen?

This depends on the situation after thawing. In general, there is no oil-water separation after thawing, and it can be used normally without causing any toxicity, but it needs to be used up as soon as possible. But it should be noted that skin care products will not be as easily absorbed after being frozen, and some of the nutrients will be lost. However, if oil and water separation occurs after thawing, do not use it as it will irritate the skin.

Skin care products will freeze at a few degrees below zero

That depends on the ingredients in the product. The crystallization point of each ingredient is different. For example, the most commonly used toner will start to freeze when water reaches 0 degrees. However, toner contains alcohol (a little bit), so it needs to be cooled another three or four degrees before it freezes. The higher the concentration, the less likely it is to freeze. The freezing points of different cosmetics are different, which mainly depends on the ingredients and components. Different ingredients mixed have different freezing points. There is no unified freezing point.

Will skin care products go bad if they are frozen?

During the inspection process, the products will be tested at a minimum temperature of -15 degrees Celsius to ensure the stability of the product. Nevertheless, cosmetics have an optimal storage temperature. Temperatures higher or lower than this will accelerate the deterioration of the product, so just use them up as soon as possible. The moisture in skin care products was originally combined with nutrients, but now it is frozen into ice, and if it melts again it cannot combine back together. The moisturizing effect should be OK, but the hydration may be poor. If you are using it for whitening purposes, it is recommended that you do not use it, as the ingredients in whitening products are unstable and you may not know if they will be ineffective.

How to thaw frozen skin care products

After freezing, the best way to deal with it is to thaw it naturally indoors, which can minimize the destruction of the nutrients contained in the skin care products or cosmetics.

How to mail cosmetics in winter without freezing

When mailing cosmetics in winter, you need to refer to the lowest outdoor temperature. If the temperature is too low, you will be frozen.

Reference temperature: 1. If the lowest outdoor temperature is below -10 degrees Celsius, it needs to be wrapped with 5 cm bubble paper. 2. If the outdoor minimum temperature exceeds minus 10 degrees Celsius, it is best not to send water-based cosmetics as they will freeze and crack. 3. If the lowest outdoor temperature exceeds -20 degrees Celsius, products extracted from pure plants cannot be shipped.

Cosmetics delivered by express in winter will be frozen. This is because some moisturizing skin care products contain a certain amount of water and oil, and some do not have antifreeze added, so they will freeze or solidify when the temperature is above minus 7°C. However, it does not affect the use, but only reduces the shelf life and certain nutrients of the cosmetics. So in principle, as long as there is no oil-water separation and excessive impurity deposition after thawing, it can still be used normally, but it needs to be used up as soon as possible. The best storage temperature for cosmetics is 5-15℃. Cosmetics stored in cold places are prone to cracking due to freezing, and after thawing, oil and water separation will occur, causing part of the cosmetics to become coarser and harder, which is irritating to the skin.