In Brazil, the first large crack consumption market appeared at the end of he 1980s in São Paulo and expanded during the 1990s reaching its peak halfway the decade. Crack use spread to other regions in Brazil during the 1990s. There is still some confusion on how crack is being produced in Brazil and what the trends are. Local circumstances such as the availability of precursors and knowledge of the production process seem to have an impact on how smokable cocaine and crack variants are produced in Brazil.