New Brazil manager Dunga has criticized Neymar and Dani Alves for dying their hair during Brazil's failed World Cup campaign.

The Barcelona duo dyed their hair blonde during the tournament and Dunga, who returns to take charge of the Selecao for the second time, was critical of the players' actions.

"I don't want players to be busy with their hair when they're with the national team. They do it before or after they're with Brazil. The focus should be on what happens on the pitch."

Dunga was also critical of Neymar's decision to wear his own hats rather than those with Brazil's logo.

The dynamic between Brazil's star player and the manager will be particularly interesting, given that Dunga left Neymar out of the 2010 World Cup squad despite a media campaign to see the then-18-year-old included.