Not storing Vitamin C serum in fridge

What form of vit C is in your serum? If ascorbic acid then it’s better to keep it in fridge. Or use it within 1-2 months (but sometimes vit C oxidises very fast)

I personally do not store them in the fridge, and they are absolutely fine! Just make sure it is in a dark cool place! ☺️

Only ascorbic acid based vitamin C needs to be refrigerated to prevent it from oxidizing too fast. Other forms or derivatives can be stored as usual. If you can't keep it in the fridge, then a dark, cool place like in a cupboard or drawer would be the next best option

If you dont keep it in the fridge and it’s pure vitamin C (ascorbic acid) then I would make sure that no light can hit it and that it’s in a place that’s somewhere around 15 degrees Celsius but preferably not warmer. U should use it up in 2-3 months in this case though

It depends on what type of vitamin C.