MAC La Vida Mocha is a warm brown with a frost finish that is permanent in palette and retails for $17.00. In comparison, Natasha Denona Sienna (50DC) is a warm brown with a sparkle finish that is permanent in palette and retails for $29.00.
Natasha Denona Sienna (50DC) is 85% similar — it is more shimmery, lighter, cooler.
