Do we need to store in these in refrigerator?

[Trainer]

I love all of the new skin care products! Do any need to be kept in the refrigerator? Also if you add water to the kiss cleanser should it be distilled water?

Thanks!

[JenW]

They could be stored in the refrigerator, but we have tried to keep the amounts in the bottles small so that the serums would stay fresh for three months or more. The toners should last longer.

I have just used regular tap water for diluting my KISS cleanser, but mineral or spring water might be better than distilled. Minerals are good for the skin. Distilled works, too.