I daresay they do it everywhere by now. I haven't been to the place where they have not ordered a gel lacquer by now because it's so popular.
In Hungarian it's called gél lakkozás.
Fake nails are called műköröm. They are also done from gel that dries under UV lamp, and many women use it to cover they own fragile nails to strengthen them.
I bought myself gel lacquer or nail polish so I could do it at home in different colours. It was a stupid investment because I realized after a couple of times that when you remove the gel polish it also takes one of the top layers of your nail with it. Not always and every nail, but mostly yes unfortunately. So my nails ended up not being more protected to grow faster but very fragile.
It also lasts 2 weeks comfortably of you are using lighter shades and about 1.5 weeks if darker- not 21 days you would expect. I am talking based on the salon made nails here, not my own attempts. Actually the reason I got my own kit was because I got fed up with paying between 6,000 for something that lasted 1,5 weeks.
Good luck!
Julia