Lethal Cosmetics Echo is a warm orange with a metallic finish that is permanent and retails for $6.00. In comparison, Natasha Denona Aura (379DC) is a warm coral with a pearl finish that is permanent in palette and retails for $29.00.
Natasha Denona Aura (379DC) is 90% similar — it is less shimmery, darker, cooler.
