Higuain scored four goals in Real’s 4-3 win over Malaga.
Salgado said: “Higuain has been sensational since he arrived. In the first season, he played a big part in the games at the end of the season that won us the title.
“He keeps improving and if he continues, he will be a very important player at the international level.”
Salgado added: “We are very excited by the way we came back in this game. Our teamwork helped us to achieve an epic recovery, and this shows that even when we are not playing well, we know to remove the shackles and play as a team.”