What's the difference between make-up and surgery?

Cate Blanchet refuses to ever have cosmetic surgery.

OSCAR winner Cate Blanchett is refusing to buy into Hollywood's obsession of defying the ageing process.

While other actors turn to Botox, facelifts, fillers, plumpers and cosmetic enhancements, Blanchett is happy to embrace her wrinkles.

I wonder if she can look this great without make-up and all the things that people do to their hair to make it look better. If not, I then wonder what she, and others of similar alignment, thinks the big difference is between cosmetic surgery and make-up, etc. Why are invasive surgical procedures off-limits while a daily dose of eye-liner is fine?