Clionadh Ciel (2022) is a cool duochrome with a metallic finish that is permanent and retails for $10.00. In comparison, Clionadh Aqua Fortis is a neutral blue with a metallic finish that is permanent and retails for $5.25.
Clionadh Aqua Fortis is 80% similar — it is less shimmery, brighter, cooler.