Mood Polish is a line of thermal polishes, which change colour depending on the temperature. Skies The Limit is a sky blue polish in its cold form, which turns mint/apple green when warm. The formula was easy to work with. I used 2 coats which gave me perfect coverage (or so I thought). Weirdly, it looked fully opaque when cold (blue), but in its warm state (mint), I could see balder patches, especially on my ridges. So, next time I will go for 3 thin coats. I applied this polish in the evening before going to bed. The following day I have noticed the smallest of chips on one of my nails. Later in the day I went swimming, after this I had a number of chips and the polish started lifting. I liked wearing this polish both colours were flattering on me. I marked it down for its lasting power, I'd say keep it away from water. But, if you'd like a polish to be a talking point, Skies the Limit, or indeed any of the Mood Polishes would do just that.