Do you also store your skin care in the refrigerator, for example to extend the shelf life? You'd better not. Again and again we hear that skin care products are stored in the refrigerator. If you've already read our post on preservatives , you know that a product can't go bad at all because it's "only" stored at room temperature. Then it should not have been approved at all, because then the product would not have passed all the stability tests required by law.
Ingredients that belong in the refrigerator
Of course, there are products that - kept in the refrigerator - can strengthen or preserve their effect, such as a decongestant gel or a refreshing toner. Here it makes perfect sense to apply the product slightly cooled. There are also ingredients like free vitamin C (Ascorbylic Acid or Ascorbic Acid) which should be kept refrigerated because they are very unstable. This active form of vitamin C should also be consumed quickly, otherwise it simply loses its effectiveness. By the way, you will hardly find ascorbic acid in a cream - it is extremely reactive and unstable, which is why vitamin C is usually offered in serums or people use much more stable vitamin C derivatives. Other ingredients like vitamin A can also lose their effectiveness if you expose them to very high temperatures of over 40 degrees for several months.
It is therefore better to use up the product quickly than to store it in the fridge, not to buy large pack sizes and also to tend to rely on manufacturers who produce in small batches.
Oils in the fridge?
Products that use oil in their formulation or are based on oil do not belong in the refrigerator because the oil can change its texture. It becomes cloudy, flocculates or thickens. Also very high temperatures over a long period of time and permanent sun exposure are not good for an oil. An oil with antioxidants generally lasts longer than one without, but an oil can still become rancid.
Particularly sensitive: UV filters
In fact, sun protection products or the filters used are often particularly sensitive. Especially chemical complex UV filters (a modern sun protection product usually even combines several UV filters) do not like cool temperatures - certainly not those in the refrigerator. They can crystallize or break down. Incidentally, this is also the reason why our D-FENCE 50 goes on winter break and should not be stored in the refrigerator. Very high temperatures are also not good for some UV filters. They do not lose their effectiveness immediately if they have been to the beach a few times and have been in the blazing heat (or light) for several hours. But to be on the safe side, it is better not to use these products on your next summer holiday or to assume that the SPF will still be achieved as stated. Better use a new product.
Overall, you can remember: HighDroxy products should not be stored in the refrigerator, keeping them at room temperature is absolutely sufficient. Our products are produced in comparatively small batches, hygienically packaged and distributed directly. So you don 'thave to worry about the shelf life and effectiveness of the ingredients.