Richarlison earned a second-minute penalty, albeit harshly on El Salvador as Roberto Dominguez appeared to get a foot on the ball, before captain Neymar converted.
Not only did the talented attacker bag a brace for Tite's side, he also won a first-half penalty that Neymar stroked home to give his team the lead.More news: New iPhone Rumors - Here's What We Know So Far
He said: "A football idea remains unchanged, regardless of the opponent".
Philippe Coutinho and Marquinhos also found the net as Brazil coasted to victory at FedEx Field, following on from a 2-0 triumph over the United States on Friday.
Brazil next plays Saudi Arabia on October 12 ahead of facing Argentina on October 16, in friendly matches. Keeping ball possession, infiltration, creating chances, is our style.More news: Trump denies 3,000 Puerto Ricans died due to Hurricane Maria, blames Democrats
"We have the responsibility to play well against any team, to print an idea and we have managed this even if it is against an inferior opponent. I hope to do more".
It took Neymar just four minutes to open the scoring from the spot before Richarlison added a second roughly 10 minutes later, the Everton forward sending a measured long-range finish over Henry Hernandez from the edge of the box...
Colombian goalkeeper David Ospina made a fine diving save to tip an Exequiel Palacios shot over the bar after six minutes while his Argentine counterpart Franco Armani was the busier of the two in the second half but neither side looked like breaking the deadlock.More news: Landslide crashes on to tourist beach on Zante