Torres has scored four times in three Europa League matches since suffering a broken nose against Steaua Bucharest, an injury which has seen him don a protective face mask.
The Spaniard is still awaiting a first Premier League goal since December, though, as he is regularly switched with Demba Ba.
Torres may continue in the mask until the end of the season.
Benitez said: "He's training well. He has confidence now and if he needs to keep the mask on, he will.
"He has to be comfortable. If he's okay with the mask and has to wear it, he will go maybe until the end of the season.
"I'm not sure, I don't know. It depends on him and he's comfortable now playing with the mask."