Yoona turns 29 on May 30, but still looks as fresh as when she debuted. Here are some of her best-kept beauty secrets.

Korean singer-actress Yoona (her real name’s Im Yoon-ah) is the epitome of a K-beauty queen. She’s got that flawless, glowing, translucent skin. Her makeup’s never overdone even for events and performances. And she’s all about natural beauty – little wonder then, that she is the face of natural cosmetics brand Innisfree.

As she turns 29, we unearth her best beauty habits to see what she’s doing right.

1. Cleanse, double-cleanse and deep-cleanse

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Feel the tranquil breeze of Jeju’s nature with Yoona. #innisfree #innisfreesingapore #innistagram #jeju #yoona
A post shared by innisfree Singapore (@innisfreesingapore) on Jan 3, 2017 at 1:31am PST

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In media interviews, Yoona admits that while she doesn’t count the number of steps in her skincare routine, proper cleansing is very important to her. She says she not only double cleanses to remove all the dirt and grime, she uses a volcanic mask when she feels like she needs to deep cleanse her pores too.

(Also read: This is Exactly How You Should Cleanse Your Face to Get Rid Of Dirt, Makeup and Dead Skin Cells)

2. Moisturise, moisturise, moisturise

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A new world of hydration is coming. Stay tuned to experience the hydration power of #BeautyGreenTea ^^ #innisfree #innisfreesingapore #innistagram #GreenTeaSeedSerum #innisfreesingapore #greentea #jeju #kbeauty #Yoona
A post shared by innisfree Singapore (@innisfreesingapore) on Mar 28, 2018 at 3:38am PDT

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It’s no surprise that Yoona emphasises a lot on moisturising her skin. After all, you don’t get a dewy glow like hers without proper hydration. While it’s no secret she loves the Innisfree Green Tea Seed Serum (she is the brand’s ambassador), did you know that she also cocktails her skincare to get the appropriate moisture her skin needs by mixing different ratios of serum, oil and cream? More serum to less cream if the climate is humid, and less serum, more cream, with an additional few drops of facial oil if her skin is feeling dry. She’s also a fan of hydrating sheet masks and face mists, which she reaches for when she feels that her skin requires it. We approve of her flexible yet rigorous skincare routine.

(Also read: What is The Gluten-Free Makeup Trend All About?)

3. Incorporate antioxidants into your skincare routine

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Yoona enjoys her moment of healing in the winter with the Orchid Enriched Cream. #innisfree #innistagram #innisfreesingapore #TrueHealingMoment #YouthfulSkin #OrchidCream #JejuOrchidEnrichedCream #Jeju #winter #kbeauty #Yoona
A post shared by innisfree Singapore (@innisfreesingapore) on Jan 1, 2018 at 2:08am PST

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While she has not outrightly stated that she leans towards antioxidant-rich skincare, her selection of skincare products (mentioned above) makes it clear that her beauty routine is packed with antioxidants. Green tea is an antioxidant-rich ingredient in skincare, with a high ratio of catechins — a natural antioxidant, while facial oils generally have essential fatty acids that help combat free radicals too.

(Also read: Superfood Skincare Products to Try For Your Best Complexion Ever)

4. Make self-care a part of your beauty routine

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오늘 하루 마무리는 반신욕으로🛀 #goodnight #융스타그램
A post shared by @ yoona__lim on Nov 8, 2016 at 8:43am PST

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Yoona seldom posts about her skincare routine or lifestyle habits; you can see from her Instagram feed that she’s not a heavy user of the social media platform. But this picture which she posted of her bathtub, complete with a lit scented candle, reed diffuser and what looks like bottles of essential oil, under low-light conditions, shows that she takes bath time relaxation very seriously. She has also said in past interviews that sleep is crucial to great skin, so she makes it a point to get a good night’s sleep.

(Also read: 3 Good Reasons Why You Shouldn’t Exercise With Your Makeup On)

5. It’s OK to cheat-eat (or drink) sometimes

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#헬요일 마무리하고 시원하게 맥쥬한잔 하세여 #캬🍺🍺🍺 #융스타그램
A post shared by @ yoona__lim on Aug 13, 2018 at 3:52am PDT

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Look at that huge mug of half-finished beer in front of Yoona and the three beer emoticons she typed into her caption. Now, imagine the amount of sugar that’s in the drink which is going to cause collagen glycation, leading to dull, less supple skin, once she downs it. We know. It sounds like a bad skincare choice. But Yoona’s posts about beer, cake and palmiers (we’re pretty sure she has a sweet tooth) show that she’s not afraid to indulge once in a while – so we should loosen up too, if that slice of cake keeps us sane. After all, stress is an internal aggressor that can cause skin to break out too.

(Also read: Why K-Beauty’s 10-Step Skincare Routine May Not Be Working For You)