Fungal infections in toe nails look ugly and most people with them are often ashamed to show their feet in public. The nails become yellowish in colour and become ticker. The fungus that causes the infection thrive in dark and moist environments, which is the exact type of environment that is found in shoe. Because of this, which ever method is used to treat them, the recurrence rate is very high as we keep putting the feet back into the shoes - the same environment that cause it in the first place. One promising treatment is the use of lasers for the fungal nail infection.