OPI Fungus Fix Nail Serum OPI Fungus Fix Nail Serum target's the source of fungus growth for a dramatically improved appearance. In as little as two to three weeks, OPI's concentrated formula will begin to remedy nail issues. Fungus Fix is a non-irritating, fragrance and drug-free formula. Features: 1 oz Bottle Results in as Little as 2 to 3 Weeks Non-irritating Concentrated Formula Fragrance and Drug Free Targets Fungus at its Source OPI101$16.99