Urban Decay Winterfell Snow is a cool duochrome with a metallic finish that is limited edition and retails for $22.00. In comparison, ColourPop A Dream is a Wish Your Heart Makes is a cool white with a metallic finish that is limited edition and retails for $6.00.
ColourPop A Dream is a Wish Your Heart Makes is 90% similar — it is more shimmery, cooler.