Our oil-based products do not contain any preservatives. Our water-based products contain phenoxyethanol. Any products that contain water or water-related ingredients (aloe leaf juice, fruit juices, etc.) must contain a preservative to prevent mold, bacteria and fungus from growing inside the product, which are some of the biggest "dirties" that we fight every day in our beauty products.
We have tested many preservatives in our laboratory incubators and extensively researched almost every preservative available on the market today. We believe that phenoxyethanol is the most effective preservative to prevent mold, bacteria and fungus, and it does not have any known dangerous or toxic side effects (cancer, hormonal or reproductive issues, etc.) that parabens and other harsh preservatives have shown. Phenoxyethanol is naturally found in green tea, and is it approved by the Whole Foods Premium Body Care standards and the Handbook of Green Chemicals, both incredibly strict teams of scientists and researchers tasked with keeping consumers safe.
A recent study showed some skin and lung irritations when used in 100% concentrations, but it is FDA-approved and considered save when used in 1% or lower concentration. We use less than 1% in all products, and we've never seen any irritation or reactions from customers.