If your Green Flash™ polish wrinkles, it's usually because your coats are too thick. This is either due to the way you applied the polish or to its texture, which can thicken over time. The solution is to apply very thin coats using no more than 3 brushstrokes, and if your polish has become too thick, we recommend you use our Green Flash™ Thinner! A few drops are enough to dilute the formula.