I must say that I had tried in this field many things from designated major manufacturers (so far unsuccessfully). It is a good product, with which was relatively soon catch a success. I usually deal with all nails with it and at the clean you could see immediately the effect of the nails saw within a week of back brighter, cleaner and healthier, even thickening are fully grown slowly (are still there, but it grows a standardizers nail to!) , In the nail heavily infested I have to wait, but he already grows healthy after even though the fungus went in 2 cases to the nail bed! I would say that it is an attempt worth it and the price adheres - compared to other products - within limits. That was for me sometimes worth a try to try it.