Today I tried to do a really smooth neon tri-color gradient. Instead of looking summery and chic, it ended up looking like a Flinstones push pop...and not in a good way. So I scrapped it and went for another color-blending technique, since I've been doing too many gradients anyway. This was really easy to do--all you need is two different polishes, a small paintbrush, and acetone.
First, I painted my nails with two coats of NYC 006. It's a dark purple creme and has a weird numbered name because I bought it in Spain, and NYC makes different products for Europe. Then I layered on two coats of OPI Skull and Glossbones, a totally awesome ghostly grey-beige from the Pirates of the Caribbean collection.
After that dried a bit (but not fully), I dipped a small concealer brush (the same one I use to clean up the edges of my nails) in acetone, and then just brushed my nails to take off some of the Skull & Glossbones. I've seen this technique used with blue and white polish to look like acid-wash jeans, but with the purple and grey I think this looks more like watercolors. Anything, really, as long as they don't look like these super fugly jeans.