Ashton Kutcher Returns to Los Angeles from Brazil
01/27/2012 AT 10:30 AM EST
The actor, who visited the South American country to shoot a fashion ad campaign, landed at LAX on Thursday, days after his estranged wife Demi Moore was hospitalized after having what a source says looked like a seizure.
Kutcher, 33, was photographed getting into his car at LAX before driving himself to Beverly Hills.
He hasn't said anything about Moore, who is getting professional treatment for "exhaustion," according to her rep. But a source tells PEOPLE he is "deeply concerned" about the health of his ex, 49.
"He still cares about her and wants the best for her," the source says. "But their marriage is ending and they are both moving on with their lives."