Its manufacturer recommends applying the Kerassentials oil four times daily (twice in the morning and twice in the afternoon). Every bottle has an enclosed brush applicator that you should use to coat your skin and nails.
The company recommends using a cotton swab to assist you in working the Kerassentials oil fungus solution into the nails and cuticles. Consider using an emery board before applying the fungus treatment and filing your nail surface; this allows the nail beds to absorb the Kerssential oil more efficiently.