Clionadh Tundra is a cool blue with a matte finish that is permanent and retails for $4.50. In comparison, ColourPop Curiouser and Curiouser is a cool blue with a semi-matte finish that is limited edition and retails for $4.50.
ColourPop Curiouser and Curiouser is 90% similar — it is more shimmery, lighter, cooler.