I had Fungus on my Right Big toe for over 10 years. Nothing cleared it up all the way, i took internal fungus supplements, oils, anointments etc. nothing cleared it up all the way. This Swissklip works, cleared all the nails plus it cleared up the bad toe, finally. However it took about 4 months, of constant use, stay consistent. You must use this product until the nail grows out. Thank you for such a great product. Internet is full of products, however this is the best.