ILNP Mega (X) is a silver with strong linear holo and small holo flakie-glitter, which makes the polish look a bit rough. I used 3 coats for full opacity, though I think you can do one thin coat if you would like to use it as a topper. The formula was wonderful and a breeze to apply. I used top coat on my middle and ring fingers because I accidentally smudged them and needed to smooth the fixer coats out. Top coat will not weaken the holo flame. Instead, it makes Mega (X) look smoother.
Thanks for looking! See you on the other side of the day!