The cross-modal effect of type of fragrance on the sensory perception of hair leave-in conditioner and the effect of silicone copolymer on keratin fibres

Cross-modal associations between olfaction and other senses at neural and behaviour levels have been demonstrated in numerous studies. The relationship between olfaction and tactile perception has a particular relevance to cosmetic products whose function often includes the improved sensorial experience of skin and hair. In addition, a ‘halo’ effect, defined as a failure to discriminate between potentially independent attributes (i.e. odour and touch) is likely to impact on the perception of product efficacy. In this study, we have assessed the cross-modal and halo effects of two distinct fragrance categories, fruity (F) and green (G), on the performance of a leave-in hair conditioner, using a sensory panel. The tactile performance of the conditioner was technically differentiated by the addition of amino-glycol-silicone block copolymer.