After a tentative opening, the Selecao easily saw off limited opponents as Neymar, with his 31st international goal, set the ball rolling, rifling in a free-kick for the opener on the half hour.
Alves drove in the second five minutes before the interval and a cheeky Neymar backheel was enough to pave the way for Hulk to dispatch the third early in the second period before Willian put the icing on the cake 17 minutes from time.
Afterwards, he indicated he saw room for further improvement.
"I am still concerned. We are getting better -- but we know we have a fair way to go," indicated the man who lifted Brazil's fifth Cup in Japan 12 years ago and who now wants to deliver first success on home soil.
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"The run out was worthwhile but we must up our rhythm and be a lot better for the Croatia game," prior to further group games against Mexico and Cameroon.
"We were a bit off beam in the opening minutes and it could have been different had we been playing a superior opponent. Afterwards, we improved."
With Neymar scoring one and making two -- he also earned a yellow card -- Scolari said of his star man: "Everyone knows Neymar's talent. But he always comes up with something new to surprise.