Hello, Rosa
First of all, thank you for your interest in our brand.

Aha essence can be used in a refrigerator, but frequent temperature changes are at risk of product deterioration.
It is recommended to keep it at room temperature.
If you want to keep it in the fridge,
Keep all the products refrigerated until they are exhausted.

But use it at room temperature without sunlight.
I'm recommending more!

If you have any other questions, feel free to ask.
Thank you.