I'll say this from the get-go, my feelings are...mixed.
I followed the instructions given on their website (HERE). I used a black base since this seems to be the most effective colour to give a true colour payoff for many chrome powders.
The instructions say to use either a silicon/sponge applicator or rubber glove to apply the powder to the nail. All I had was a sponge applicator I managed to scavenge from an eye shadow palette. I might have been using too much product but this process is MESSY. I don't understand how there are so many pictures of freshly applied chrome nails with little to no mess. A week later I still have some powder in little nooks and crannies of my fingers.