ColourPop Lap of Lux is a warm brown with a metallic finish that is permanent in palette and retails for $4.50. In comparison, Natasha Denona Sienna (50M) is a warm brown with a metallic finish that is permanent and retails for $29.00.
Natasha Denona Sienna (50M) is 95% similar — it is more shimmery, lighter.
