L'Oreal Enamel Red is a cool red with a luminous finish that is permanent and retails for $9.99. In comparison, YSL Rouge Unapologetic (151) is a warm red with a luminous finish that is limited edition and retails for $38.00.
YSL Rouge Unapologetic (151) is 80% similar — it is less shimmery, lighter, warmer.