If the infection is severe and has been present for a long time, your doctor may recommend that you have your nail removed. The fungus might hide deep under the nail. Kerassentials will return your money, no questions asked. You should increase the amount of protein you eat. Here's how to make your decision the next time you're shopping for shoes. The fungus grows under the nail, turning them yellowish-white or brown. To prevent any drug interactions, tell your doctor about all current medications. Avoid sweaty feet or dirty feet or hands before the application of the oil. These antifungal properties in Kerassentials help fight nail fungus by killing or inhibiting the growth of the fungal organism that causes the infection. People who have medical illnesses that predispose them to fungal nails can have an even more difficult time eradicating the fungus. Keep your nails trimmed to reduce pressure and pain.