Our ingredients are 99.5% from natural origins including the active ingredients, Silver Hydrosol & DNA HP. We have used as many organic ingredients as possible, particularly our essential oils and extracts. The protective qualities of the violet glass and the naturally antibacterial properties of Silver Hydrosol have allowed us to use only the very mildest combination of two food grade preservatives. Sodium benzoate is derived from the benzoic acid found in cocoa powder, cranberries, prunes and cinnamon. Potassium sorbate is derived from the ascorbic acid which occurs naturally in the European Rowan berry.