Purifying concealer with shale extract Derived from the famous Pâte Grise L'Originale, Stick Couvrant Pâte Grise is a high-coverage concealer recommended for regular or occasional minor spots. Enriched in shale extract, the iconic active ingredient in Pâte Grise L'Originale, this product purifies and conceals specific blemishes. This high-coverage tinted stick very naturally camouflages unsightly minor spots to give clear skin and an even complexion.