Australian actress Nicole Kidman reveals sunscreen is the key to her daily skincare routine.

The age-defying star thanked her years of dedicated SPF use for keeping her skin healthy and radiant.

The Practical Magic 2 star announced on July 25 her new role as Global Brand Ambassador for Japanese skincare and beauty brand, Clé de Peau Beauté.

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Kidman, 58, says it’s a brand her make-up artist has used on her for years.

One of her favourite products from the line is the UV Protection Cream SPF 50+.

“I went to Wimbledon and this is what I wore — it’s so good,” Kidman told PEOPLE.

Raised in Sydney, on the Northern Beaches, the Hollywood star grew up with sunscreen as a daily essential.

In an interview with Vogue, she revealed her rules on skincare.

“It’s the one thing I teach my girls,” Kidman said.

“For my girls, I’ll use like a 30, but I like the SPF 50 for me, which is the one that I use.

“I also love the sheer zinc because for me it’s such a great protection for my nose and for my shoulders and when I’m working.”

The mum-of-two also shared that building her confidence is what helps her feel good on the inside.

“I am raising girls in their teens — you realise the importance of empowering other women,” Kidman told PEOPLE.

“The way in which when you are empowered, that sort of inner confidence actually shows through, and to me that’s very beautiful.”

The new campaign also features Kidman’s youngest daughter, Faith Margaret, 14, whom she shares with her husband, singer Keith Urban.

“We flew out together and we were able to just have fun on the set,” Kidman reflected.

“It was just sort of a magical, dreamlike experience, which I hope when people see the campaign, they get.

“She’s my baby, and it was a sweet little way to capture her at 14.

“It was one of those things where you say, ‘This isn’t a job. This is actually a gift’.”

Kidman and Urban’s eldest daughter, Sunday Rose, 17, recently launched her modelling career.

Earlier this year, the rising star landed her first major campaign, fronting a new luxury advert for Italian fashion brand Miu Miu.

Kidman added she feels most beautiful when she’s with her daughters.

“I love doing hot yoga right now, so I feel really good about an hour after that,” she said.

“My daughters and I, we do it together, and we call it the glow up.

“We look red-faced and ragged when we come out, but about an hour later, wow.”

Shop more SPF products in Australia:

Ultra Violette Future Fluid SPF 50+ Superlight Mineral SKINSCREEN, $52

La Roche Posay Sunscreen Lotion, Ultra-Light Fluid, $32.99

Bondi Sands SPF 50+ Fragrance Free Face Sunscreen Lotion, $16.95

Airyday Mineral Mousse Dreamscreen SPF 50+, $25

CeraVe Facial Moisturising Lotion AM SPF50, was $26.99 now $23.99

Always read the label and follow the directions for use.