It is pretty amazing, when painted on top of a base colour, it creates such a lovely cracked effect. It dries almost immediately and when as it does it leaves a matte black pattern. Check out this video to see how it works here.
I used Eyeko's Punk as a base colour and applied a layer of the Instant Nails Effect, one layer is all it needs. The colour shouldn't be overlapped.
I am LOVING it! Can't wait for them to release more shades :) This retails at £3.95 and I'm not sure if it's available in stores yet, just online as far as I know at the moment. Currently Barry M have 15% off all orders when the code 'SEPTEMBER' is entered at checkout. Offer ends tomorrow (30th September!).
I also bought two more polishes with this order and will eventually do a collective haul post once I have everything in order :)
Hope everyone is having a great week!