This research explores the production and commercialisation of "fair trade and solidarity" tourism services in a constructivist perspective. It analyzes the ways in which actors ascribe the "fair trade and solidarity" category to touristic peformances and seek to objectify its content, and the ways in which customers assign meaning to these practices. It thus examines the sale and consumption of "fair trade and solidarity" products, characterised by face-to-face interactions between producers and consumers. It shows how central symbolic constructs are to the individualisation and valorisation of these performances. A genetic method allows to identify the sponsors of this category, their social characteristics and projects, as well as the social worlds thanks to which they were able to carve a micro segment in the market of salvation goods. These actors build both the supply and demand for solidarity tourism. Through the selection and training of local hosts and partners and the choice of activities, a diversity of competing concepts of solidarity create a range of distinct services. As potential customers face significant uncertainty, customers' recruitment is analysed in light of the economics of singularities and expectations shaped by their own previous experiences. The production of enchantment is unstable and closely linked to the emergence of a "true encounter", and to the judgment tourists make about the fairness and authenticity of such interactions.
