What are the index numbers of the most popular nail files
The most popular file is 100/180. The two sides of this file can be used for most tasks performed by a nail file, that is why 100/180 grit is known to be the most versatile index, good for working with both acrylic nails and artificial nails.
There are so many types of nail files. How do I know which one to use
Older nail files, like the ones made out of metal, are used rarely out of fear of splitting and therefore damaging the nails. The sapphire and Teflon files are sturdy and durable but have failed for the very same reason. Glass files which have a slightly better opinion, are resistant to exploitation and easy to disinfect are recommended for home use – they work best with a natural nail plate and the risk of shattering makes it unsuitable to use in a professional nail salon. One of the most popular choices are paper files – available for a low cost and more durable than ever thanks to new technologies. With an application of new generation of coating, LesManicure files are ten times more resistant to grinding than standard files. They can't be harmed by water or disinfecting solutions – they can be used for a long time.
Is it worth to pay a bit more for a file
Yes, it is. You should remember that files can be disinfected and used more than once. That will save you money as you don't have to throw away good files (unless they come into contact with blood or any type of bacteria).
How to clean it
Simply brush the dust off using your ordinary manicure brush, wash it with a hint of soap and then spray or soak with disinfectant liquid.