PurposeThis study aims to analyze the responsible consumption of Generation Z and millennials in the Latin American market, with special emphasis on the Peruvian case, to identify their differences with consumers born in 1980 and earlier and to evaluate their contribution to Sustainable Development Goal 12.Design/methodology/approachThe study was conducted on a sample of 309 persons living in Lima. After developing and validating an instrument, an online questionnaire was used to collect data. These data were analyzed descriptively and inferentially, using chi-square tests to validate the relationship between variables.FindingsThe study identifies and explains the new trend of responsible consumption among Generation Z and millennials in emerging markets, where end consumers interact with and prefer products and services from companies that demonstrate responsible behavior and offer trust. It identifies new consumption variables that go beyond the traditional ones.Research limitations/implicationsThe study reveals a trend in the responsible consumption of Generation Z and millennials in Peru. However, it is necessary to complement the study in other countries in the region, as well as to study the new generations, such as the alpha generation and their consumption patterns.Practical implicationsThe new trend of responsible consumption among Generation Z and millennials is forcing companies to implement strategies and develop corporate social responsibility programs. These companies must demonstrate ethical, environmental, socially responsible and sustainable behaviors in their daily operations to satisfy their stakeholders.Originality/valueThe study reveals a new trend in Peru, a developing country, where the market – the end consumer – is more informed and therefore demands better corporate performance from companies, including care for the environment and a contribution to society that includes a good relationship with its stakeholders.