The double extract serum is the most concentrated component of a range drawing on its master distiller heritage roger gallet creates a unique biphasic solution of water and essences which concentrates the power of 18 distilled and officinal plants very concentrated its fluid texture smoothes and penetrates skin quickly to infuse its benefits item details tested under dermatological control benefits n1 impurities and wrinkles appear reduced n2 restores skins barrier and protects it ag