Carlos Roberto Gomes spends his days leaning on a stone wall with a big, brightly colored sign around his neck.
His sign advertises the services that he offers to passersby on the downtown street where he earns his living.
It says that Gomes buys gold. He can fix you up with a tattoo or some body piercing.
Read the sign closely, and you'll also see that he might be willing to lop off your hair and purchase it from you.
Top-quality human hair from Brazil fetches a good price in Europe's salons, where it's sold as extensions and wigs, explains Gomes.