OPI's famous nail polishes are available in over 400 beautiful colours and they are currently being sold in more than 70 countries. THANKS A WINDMILLION belongs to the HOLLAND collection. OPI's nail polish is internationally known for its incredibly high quality and it constantly wins awards and best in test. The polish is very easy to apply, gives a glossy and sleek surface and it is very durable, making it very long-lasting. Because the new colours always are decided in cooperation with the American Fashion Council, OPI's nail polish will always follow the latest trends and colours. OPI releases a large number of new colours every year, so you can always be sure to find your favourite colour! 15 ml.