Given the growing role of affective factors in consumer behaviour and particularly on brand loyalty, the deterioration of these factors can provide an additional explanation of the dissolution of the relationship between the brand and the consumer. A new concept, brand detachment, was developed in marketing research to enhance understanding of the dissolution process of the relationship between brands and consumers. Brand detachment results from the dissolution of the affective bond existing between a brand and a consumer and can be seen as an attitudinal aspect of the dissolution process of certain relationships. After conceptualizing brand detachment, the results of a quantitative study (N=434, use of regression analysis) allow this concept to be used as an indicator of the consumer's propensity to end the relationship with the brand. Thus brand detachment has a negative influence on the consideration of the brand and the consumer's subsequent buying behaviour in relation to it.