This product countains much more active product than other similar fungus treatment products. The best I have tried so far and I have been fighting this fungus over 20 years. I am using Polinail since 3 years. I got half of my big toe back. Still fighting for the other half. Best is to use some abrasive paper to smooth out the nail every 4 days and apply Polinail daily. Do not use included brush. Use disposable cotton buds per example so the liquid in the bottle remains clean from germs.
I dont normally write reviews but after years of trying to control the damage to my toe nails Polinail comes out tops. In short, if you have struggled with every product on the UK market I really would give this a whirl.