Sydney Grace Bronzed to Perfection is a warm copper with a metallic finish that is permanent and retails for $6.00. In comparison, Natasha Denona True Copper (305M) is a warm copper with a metallic finish that is permanent in palette and retails for $29.00.
Natasha Denona True Copper (305M) is 85% similar — it is more shimmery, darker, cooler.
