MW Solution wax (in styrene)

Used at 2% level to give a tack free surface, commonly used as an additive to Gelcoat for external applications.
For example if you are applying to boat hull or flat roof.

How much wax solution should i put in my Gel coat to make a Flo coat?

You should put 2% wax solution in for this purpose, that's 20ml per Kg of Polyester Gelcoat.