None of the fungal creams ever worked for me except for ringworm. Nail fungus (amount other skin ailments) were only cured using 2 home remedies. For those dark places, Listerine Original (not the flavored), or rubbing alcohol. For nails, a soak in bleach for 3 minutes a day was amazing. Dilute with water if needed. It was VERY effective. I tried vinegar, it didn't work.