Lethal Cosmetics Exosphere is a cool duochrome with a metallic finish that is permanent and retails for $16.50. In comparison, Terra Moons Witches Broom Nebula is a cool duochrome with a metallic finish that is permanent and retails for $15.00.
Terra Moons Witches Broom Nebula is 85% similar — it is more shimmery, lighter, cooler.