Apart from storing aloe vera gel in the freezer, you can increase its shelf life in the following ways: - Blend vitamin E along with aloe gel and store it in an airtight container in the fridge. Use this blend in hair masks, face masks, and as a nail treatment. - Mix aloe gel with equal quantity of honey. Store in the fridge and use as a hair mask or face mask as is, or along with added natural ingredients. - Vitamin C is a natural preservative - mix freshly squeezed lemon juice and blend well with aloe gel. Store in the fridge and use on face and hair as needed.