The 47-year-old actress has been using the skincare brand's products for "over 15 years" and has praised their facial spray as being the best product because it moisturises her face, adds an extra glow to her complexion and "seals" her make-up in.
Speaking to Elle UK Online about her beauty essentials, the golden-haired beauty said: "An ageless primer ... Well, first I need to give credit to my amazing make-up artist Morag Ross. I've worked with her for years, and she's truly a genius. And I will say that she's used the SK-II mist to help set my looks, because it's hydration but not shiny. I can't stand powder, and feeling dry on my face. This mist, I guess it is sort of an immortal primer, if you want to call it that, because it keeps the glow but also seals my make-up look in.
"I've got friends in their 20's who use anti-aging facial treatments. I've been using mine for over 15 years."
Although the 'Carol' star believes everyone is "obsessed" with anti-ageing, she has bucked the trend and has admitted she only wants to look "as good" as she possibly can for her age.
She explained: "This is the thing: Everyone gets obsessed with anti-aging but I'd rather look as good as I can at the age I am. And the thing about the facial treatment essence is there's no other product like it because it's about clarity, tone, texture, and what I've found is it's given my skin elasticity."
And the Australian star doesn't keep her beauty regime a secret from her friends or family and has openly advised her relatives on the best cosmetics to use.
She said: "But I do think, also, that there used to be something illicit about a woman's beauty regimen, where it had to be a 'secret', and so sometimes people would snoop because everyone's products were behind closed doors. And I'm incredibly open about that stuff. All my friends know what I use. They're already stocked up."