The 42-year-old actress - who is the face of French cosmetic company Lancome - doesn`t want the wrinkle-smoothing injections which can leave people with frozen-looking faces because she wants her children to be able to understand her expressions.
Julia - who has three kids, five-year-old twins Hazel and Phinnaeus and son Henry, three, with her cameraman husband Daniel Moder - told Elle magazine: "It`s unfortunate that we live in such a panicked, dysmorphic society where women don`t even give themselves a chance to see what they`ll look like as an older person.
"I want to have some idea of what I`ll look like before I start cleaning the slates. I want my kids to know when I`m p***ed, when I`m happy, and when I`m confounded. Your face tells a story and it shouldn`t be a story about your drive to the doctor`s office."
The Hollywood star has also revealed George Clooney played a series of schoolboy pranks on her while filming `Ocean`s Eleven` and `Ocean`s Twelve`.
She also confessed the other actors - which included Brad Pitt and Matt Damon - broke into each others` rooms to take obscene photos on each others` cameras.
She said: "Those boys! I was the only girl there. One day George Clooney put these giant potted trees in front of my door so that I couldn`t get out to work. I pride myself on being punctual!
"You didn`t want to leave your camera lying around, either. People were breaking into each other`s rooms, taking them, and let`s just say you didn`t want your mom picking up your photos at Walgreens! Photos of unidentifiable body parts!"