The authors focus on a fashion brand, Patagonia, to study green demarketing advertising in the fashion industry, a strategy for enhancing sustainability by encouraging consumers to avoid buying unneeded products. The study shows that green demarketing advertising positively affects consumer attitudes and behavior intentions in consumers who have either analytic or intuitive cognitive styles. All cognitive styles react most positively to concrete rather than abstract demarketing advertisements. Theoretical and managerial implications are discussed.