The Preservative-Free Calendula Extract is a plant-derived hydro-glyceric solution made with glycerin, water, calendula flower extract, and citric acid. It is ideal for cosmetic formulations, with a characteristic color and odor, an acidic pH (2.6-3.5), and is free from GMOs and residual solvents. The product is microbiologically safe, contains no pathogens, and has a shelf life of 12 months when stored properly.