Yes, parabens are used to effectively preserve the Personalized Serum. Parabens are ingredients that are widely-used and recognized as valuable for preserving cosmetic and personal care products. They protect products from microbial contamination. All commercially-used parabens are synthetically produced, although some parabens also occur naturally in certain fruits (for example, blueberries and carrots). Parabens currently used in Amway products are permitted and approved for use as preservatives by regulatory authorities. Amway actively monitors the scientific review of parabens by various regulatory authorities around the world so that if we meet the guidelines, we use only authorized parabens in our products.