Nail Pop X Dolls Kill Hail, Hail! Nail Decal, all hail the queen of darkness. These xXxclusive collaboration nail decals were conceptualized by Erin Hart just for you dolls. These BBZ are so easy to apply, just cut out the design you want and place it in water for 15-20 seconds, then remove from the water with tweezers. Slide off the paper backing, and place the decal on yer nail where you want it, then paint over a few times with a clear top coat. With tons of individually illustrated prints to choose from, including pentagram, baphomet, roses, skulls, and even skeleton keys, give em the royal treatment- even if its with one finger in the air.