Hi, I am currently in training as a nail tech and have been practicing my french polishing technique however can't seem to get the correct products to make the finish last any longer than 4 days or so. I had a french manicure done earlier this year at a local salon (before I even thought about doing a course) and it lasted a fortnight, the technique used was polishes with a uv top coat which was cured but one of the under coates was quite thick and think this is why it lasted so long, any ideas?