The pumpkin enzyme masque and anything with Vitamin C in it should be stored some where out of sunlight and cool.
The shelf life for the pumpkin enzyme masque, vitamin c cream, vitamin c serum, and vitamin c elixir is about 6 months. Storing them in the fridge can help extend the shelf life of these products.
All other oils have a shelf life of 1 year.
The activated charcoal clay masque does not have an expiration date as long as it is still it's dry form.
The Eau de rose spray and glycolic and rose masque do not have an expiration date.