Sephora Mermaid to Order is not a polish I've ever seen before. I've seen similar colors, but I haven't seen Mermaid to Order swatched. I picked this polish up in a blog sale for $2, and I can't believe how great of a deal this was. :) It's from an old collection, so I'm not sure how easy it is to find (although I just looked and it's available on amazon.com, and there's even one for sale on ebay).
Mermaid to order is an aqua blue metallic frost with a faint blue/green duochrome. When it came in the mail I immediately painted my toenails (because they were due for a new pedi!) and fell in love with the color. For the last two days I've been looking at my toes wanting to try this as a mani. It's just so bright, vivid and shiny, definitely Mermaid-scale-like.
The formula wasn't perfect, although two coats made it opaque, I had to be very careful to avoid obvious brushstrokes (a common problem with frosts) and even with all of the care in the world it bubbled. I used good ridge filling base coat under this one since frosts are soo good at showing any little flaw in your nails. The overall finish ended up being nice and smooth although you can see the dent in my index finger where I got a little overzealous with my chef's knife a few days ago. :)
Click read more to see more photos (it was quite the photoshoot)