The sensory reactions of consumers to common products such as health and beauty products strongly inuence purchasing decisions1; in fact, of consumers who claimed unusually sensitive skin, 78% avoided specic products due to prior experiences of unpleasant sensory effects with their use.2 Manufacturers of consumer products conduct intensive premarket testing intended to ensure that marketed products are free of irritant potential. It is not uncommon, however, for postmarketing surveillance efforts to receive reports of sensory perceptions not predicted by even the most robust development methodology.1 These sensory perceptions, though often transient and unaccompanied by a visual dermatological response, dene an equivocal and still evolving dermatological condition known as sensitive skin.