His toenail rate increased over time and the fungus disappeared. Results may take longer depending upon the severity of the condition. Toenail infections are more common in people who have bunions, hammertoes, or calluses. Sometimes they can separate from the nail bed and crack or break in certain spots. Kerassentials is a type of essential oil that was developed by a doctor for patients suffering discomfort from fungal infections. Three sessions of laser treatment may be required to eliminate the fungus. After years of research and experimentation, she developed an all-natural product that has no adverse effects.