The 27-year-old was photographed looking radiant and smiling leaving the Malibu treatment center, before returning to her car, TMZ reports.
Lindsay Lohan had to follow a 90-day rehab ordered by the court.
After joining the Betty Ford Center on May 2, Lilo changed the setting headed to a Cliffside center in California in mid-June.
It was reported that the star would extend her treatment a few days to make a smooth transaction. It finally turned out that the starlet was in a hurry to leave rehab.
Lindsay has received not-so-favorable reviews for her role in the new thriller movie The Canyons that premiered in New York City on Monday.