NARS Mayhem is a cool mauve with a matte finish that is limited edition and retails for $27.00. In comparison, L'Oreal Le Mauve Indomptable is a neutral mauve with a semi-matte finish that is permanent and retails for $13.99.
L'Oreal Le Mauve Indomptable is 90% similar — it is lighter, warmer.
