Too Faced Butterscotch is a warm copper with a metallic finish that is limited edition and retails for $16.00. In comparison, Natasha Denona Cool Bronze (31M) is a warm copper with a metallic finish that is permanent in palette and retails for $29.00.
Natasha Denona Cool Bronze (31M) is 80% similar — it is more shimmery, lighter, brighter.