I picked up this fun polish from a Del Sol store in Seaside, Oregon. It’s designed to change colors in sunlight. I chose the color combo “cold snap” because it had the biggest color difference of colors I liked. I had several colors of polish that reacted in sunlight when I was in college, but they didn’t change that much. For instance, I had a lime green that changed to silver. Over repeated sun exposure, the green turned lighter and lighter until both colors were very close to the same yellow-silver color. Not so with this polish! These colors keep their integrity! However, it also takes more time for them to turn. Still, a worthy purchase and fun to use. Since then I’ve seen Del Sol stores in many tourist areas.