I do my nails at home weekly, but recently got a manicure & the lady used what I believe to be a gel top coat. Does anyone know what the best one would be for home? I want something thin that just seals the polish, but adds a bit of thickness to the nail.

Here is a website with some of the popular ones:

http://www.nailsmag.com/article/90926/sealed-with-a-gel?page=2