Australian actress Cate Blanchett is "too frightened" to undertake cosmetic enhancement and pities women who turn to surgeons to alter their looks.

The 42-year-old Elizabeth star has no desire to roll back the years by going under the knife, and admits she has been turned off surgery after seeing the long-term effects of it.

She tells, "There's been a decade or probably more of people doing interventions on their faces and their bodies, and now people are seeing that (in the) long term, it's not so great."

"I'm not sitting on a soapbox telling women what they should and shouldn't do. I just know what works for me. I'd just be too frightened about what it means long-term."

"Looking at women in their 20s doing this stuff, in the end all you see is the work. It doesn't fill me with admiration; it fills me with pity."