Also known as free radical scavengers, antioxidants neutralise free radicals and protect skin from damage. Plant extracts such as green tea, arnica flower, and horse chestnut seed contain a variety of antioxidants. Other antioxidants include copper, zinc, Vitamins C and E. HydraFacial plays a vital role in removing dead skin cells and impurities as well as reviving the skin with regenerative antioxidants.