Kerassential oil contains no additives or toxic chemicals. Although less common symptoms, toenail infection can also occur at the base. Your provider can recommend care methods to reduce the likelihood of infection recurrence. They are also more prone to fungal and bacterial infection. This ensures that the fungus is eliminated and prevents re-infection. Your entire nail becomes infected and the fungus spreads to your neighboring nails. Based on extensive research and study, it was proven that Kerassentials nail & skin health formula is a reliable recipe that improves nail & skin health. You are not the only one embarrassed about your flaking, discolored toenails.