Sodium Levulinate Good Humectant Hydration Sodium Levulinate at a glance Salt of levulinic acid Levulinic acid helps condition and soften skin Also exhibits antimicrobial action Safety in cosmetics is under review Sodium Levulinate description Sodium levulinate is the salt of levulinic acid, a synthetic organic acid that helps condition and soften skin. Sodium levulinate is sometimes part of preservative blend because it exhibits antimicrobial action, although this is more common in food than for cosmetics. The levulinic acid component can be transformed by naturally-occuring microbes into other helpful substances, including the moisturising ingredient trehalose. Related ingredients: Trehalose