Too Faced Biscotti is a warm brown with a frost finish that is limited edition and retails for $16.00. In comparison, Natasha Denona Glam (331M) is a warm brown with a metallic finish that is permanent in palette and retails for $29.00.
Natasha Denona Glam (331M) is 80% similar — it is less shimmery, darker, cooler.
