Guerlain Mythic is a neutral sheer with a natural finish that is permanent and retails for $59.00. In comparison, Chanel Poudre Signee de Chanel Illuminating Powder is a warm white with a luminous finish that is limited edition and retails for $68.00.
Chanel Poudre Signee de Chanel Illuminating Powder is 90% similar — it is more shimmery, warmer.