L'Oreal True Teal (260) is a cool teal with a pearl finish that is permanent and retails for $8.99. In comparison, Marc Jacobs Beauty Top Seacret (88) is a cool teal with a frost finish that is permanent and retails for $26.00.
Marc Jacobs Beauty Top Seacret (88) is 90% similar — it is less pigmented, cooler, lower quality.
