The 56-year-old actress said she has never been tempted to enhance her features, reported contactmusic.
"I can't tell you how many plastic surgeons have tried to sell me a face-lift. That's not ethical, because the Hippocratic oath is to do no harm, and elective surgery can be harmful, and that's not cool," she said.
Stone refused to judge people who have gone under the knife.
"If it's needed and appropriate, then yes, do it. "For example, I was in a horseback-riding accident when I was 20 and I ended up with a ragtag scar on my neck, so I had it fixed.