Highly recommended by FILLMED for use prior to all injectable treatments, NatraSan Skin introduces a revolutionary approach to skin preparation. The active ingredient in NatraSan Skin is HOCI, or hypochlorous acid—an exceptionally effective weak acid naturally present in the human immune system. Choose NatraSan Skin for its innovative and gentle yet powerful approach, setting the stage for injectable treatments with confidence in optimal skin disinfection and protection.