The active ingredients also increase the health and swelling of your nails. They could be someone with diabetes or someone at risk of getting cellulitis, ulcerations, or both. It also contains anti-bacterial, anti-fungal and other properties that make it a great remedy for toe and brittle nails. Kerassentials contains natural oils that are rich in antifungal and can be used to treat fungal infection. This is the active ingredient. The urea-based nail cream is then applied to the nail and covered with an adhesive bandage. Patel has been a great doctor. Terbinafine, an oral prescription medication prescribed for severe toenail infection, is also available. Sometimes, a fungal infection can also lead to a bacterial nail infection. Other causes include contact to certain moulds and yeast species. In the surgical nail removal, the infected nail and tissue is usually removed permanently to prevent the recurrence of the fungus and maintenance of the painful nail deformity.