Keep your nails short
Dry your toes and between your toes well after getting out of the shower
Remove your socks and shoes at home to prevent your feet from remaining damp (maceration causes the fungus to proliferate)
Apply the solution to the yellowed nail twice a day, every day, until the nail visually improves (around 4 months for a toenail)
Wear sandals in public places (swimming pools, showers, changing rooms) to avoid any risk of contagion