Kramer Labs is in the process of updating the formula and active ingredients across the entire Fungi-Nail line. The active ingredient is changing from undecylenic acid to tolnaftate (an active ingredient with more benefits: it treats and prevents, unlike undecylenic acid which only treats) plus adding 5 natural oils to the formula to help restore skin health. The new Fungi-Nail formula has a cloudy appearance, which is completely normal.