Nail Pop x Dolls Kill Space Treats Nail Decal is why shrooms are great when yer hungry. 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 octo and donut cats, kawaii sushi, melty popsicles, and candy galore, you might start a nail biting habit if ya get the munchies.