MAC Amorous Alloy is a warm brown with a satin finish that is permanent and retails for $20.00. In comparison, Natasha Denona Cool Plum (70P) is a warm brown with a satin finish that is permanent in palette and retails for $29.00.
Natasha Denona Cool Plum (70P) is 90% similar — it is less shimmery, darker.
