The Lighthouse Daily Defense Spray (0.02% hypochlorous acid) is a lightweight mist designed for all-over daily skin and foot cleansing, especially in areas exposed to sweat, odor, or friction. The Lighthouse Restore Serum (0.03% hypochlorous acid) has a slightly thicker texture that helps it cling to nails, cuticles, and dry areas for targeted hydration and surface cleansing. Many people use both products together as part of their daily foot and skin care routine.