Guerlain #21 is a cool red with a cream finish that is permanent and retails for $36.00. In comparison, Gucci Beauty Eadie Scarlet (502) is a cool red with a natural finish that is permanent and retails for $42.00.
Gucci Beauty Eadie Scarlet (502) is 80% similar — it is less shimmery, lighter, less pigmented, warmer.