I got a new nail kit from Sephora that has the bottle you see above and also contains a larger bottle of oil. I think it's called the Perfect Formula Strong Nail system (not positive). I used the bottle you see above as a base, then followed with my regular base of Palladio Fuse.
Next, I used one coat of Illamasqua Muse. ONE coat!! I was so happy for that. I wish the sun had come out to make the gold look more shiny and pretty.
Anyway, I retract my previous statement that you'd need to use two coats of the 18K Gold top coat. It looks nice with just one. :)