Refresh Optive Fusion is a dual action formula that lubricates and hydrates dry eyes. It has two polymers: HA is a polymer that provides quick, soothing relief while CMC provides long-lasting relief. They team up to offer you a comfortable blink with low blur. Refresh Optive Fusion is preserved with Purite, which provides gentle, antimicrobial protection because it breaks down into natural tear components when administered to the eye – that’s what makes it so gentle.