Too Faced Mermaid Tears is a warm plum with a sparkle finish that is limited edition and retails for $22.00. In comparison, Obsessive Compulsive Cosmetics Strange & Unusual is a warm purple with a metallic finish that is discontinued and retails for $17.00.
Obsessive Compulsive Cosmetics Strange & Unusual is 80% similar — it is more shimmery, darker, warmer.