polish here and if we use a soft nail file it will take much longer to remove it all.
you just need to remove the top layer. the rough nail file might leave some scratches or lines on your finger nails and you don't want that so we will use a softer nail file afterwards to get rid of any possible scratches. if you have a polishing nail file that will work well too, but i don't have it so i won't be using it.
it is less rough than the previous one and it's also smaller so it will help us to get rid of the remaining areas of nail polish. 