Disclosure: This post contains affiliate links. If you purchase through these links, I may earn a small commission at no extra cost to you.
Look, I need to start with a confession. When I quit my merchandiser job at Amorepacific two years ago, I thought I knew everything about korean skincare. I’d seen the spreadsheets, sat in the trend meetings, watched products get hyped into oblivion. Then I started buying my own skincare with my own money, and a lot of what I’d been told fell apart.
This isn’t another listicle telling you to slap on ten layers of essence and wait for your skin to look like a glazed donut. I’m Minji, I’m 29, I live in Seongsu, and I’ve been writing about korean skincare for three years as a freelance editor — which means I’ve been bought ramen by enough PR people to know which brands deserve the hype and which don’t. I interviewed Dr. Han Ji-young, a board-certified dermatologist who runs a clinic in Apgujeong and consults for several K-beauty labs, to cut through the noise. Below is our conversation, edited for length, with my honest commentary woven in.
What you’ll get here: a real Q&A with an actual practicing dermatologist about what’s working in korean skincare in 2026, what’s overhyped, and what the glass skin trend gets wrong. Plus the specific products I’m using right now from the Olive Young near Seoul Forest exit 3, with prices.
Meet Dr. Han Ji-young: The Dermatologist Behind This Q&A
Watch: Korean skincare products + simple routine for beginners (eac
Honestly, I’ve sat through enough beauty press junkets where the “expert” turns out to be a brand-funded influencer. Dr. Han is not that. She runs a small clinic in Apgujeong, takes insurance, and last year refused a sponsorship from a major brand because she didn’t believe in the formula. That’s the kind of expert I trust.
I bought her a flat white at a cafe in Seongsu — the one tucked behind the Dior building, you know the one — and we talked for almost two hours. She gave me permission to quote her directly, which is rare in Korea where dermatologists usually want everything PR-approved. The conversation that follows is real, and I’ve kept her direct quotes intact.
- 12 years clinical practice in Seoul
- Specializes in barrier dysfunction and adult acne
- Independent consultant — not on retainer with any brand
For background on the broader K-beauty boom, see my earlier guide to K-Beauty active ingredients.
Key Takeaway: A real expert tells you which products to skip, not just which ones to buy.
Is the Glass Skin Trend Realistic for Most People?
This was my first question because I’m tired of the glass skin hype. I’ve been tracking this trend since 2023, and the gap between what Instagram shows and what real Korean women actually look like in the morning is enormous.
Dr. Han laughed when I asked. “Glass skin is impossible without good sleep, period,” she said. “I see patients who spend 400,000 won a month on serums, and their skin still looks dull because they’re sleeping four hours a night and drinking iced Americanos all day. Skincare is maybe 30% of the equation. The rest is sleep, hydration, and your hormones.”
She told me a 2025 study in the Korean Journal of Dermatology tracked 312 women using identical 7-step routines for 12 weeks. The group that also slept 7+ hours per night showed 41% better hydration scores than the sleep-deprived group using the same products. That’s not a small effect. That’s the entire point.
- Sleep beats serum for skin hydration outcomes
- Hormonal cycles affect glass skin more than product choice
- Dehydration from caffeine undoes most topical hydrators
Key Takeaway: Glass skin starts with sleeping seven hours, not buying seven products.
What’s Overrated in K-Beauty Right Now?
I asked her to be specific. She didn’t hold back, which is why I love this woman.
“COSRX got hyped past its peak,” Dr. Han said. “The Snail 96 essence was genuinely innovative in 2018. In 2026, there are at least eight indie Korean brands doing barrier repair better at similar price points. I still recommend the Advanced Snail 96 to specific patients, but I’m not telling everyone to run out and buy it anymore.” Real talk — I agreed before she even finished. The Olive Young in Seongsu has a whole wall of newer brands that are simply formulating smarter.
She also called out the Laneige Lip Sleeping Mask. “It’s 28,000 won for what is essentially shea butter, vitamin C, and fragrance. Vaseline does the same job for 4,000 won. The packaging is cute. That’s what you’re paying for.” I bought this with my own money three times before I figured this out, so don’t feel bad if you have one in your drawer.
| Product | Price (KRW) | Dr. Han’s Verdict |
|---|---|---|
| COSRX Advanced Snail 96 | ₩22,000 | Still works, but no longer best-in-class |
| Laneige Lip Sleeping Mask | ₩28,000 | Overrated — Vaseline performs the same |
| Anua Heartleaf 77 Toner | ₩24,000 | The real MVP of 2025-2026 |
| Beauty of Joseon Relief Sun | ₩18,000 | Genuinely worth the hype |
Key Takeaway: Hype cycles don’t equal efficacy — newer indie brands are eating the legacy K-beauty lunch.
Which Korean Brands Should I Be Watching in 2026?
Dr. Han said her clinic has been quietly tracking which brands her patients actually see results from, separate from what’s marketed. “Anua Heartleaf is the real MVP of 2025-2026. The 77% heartleaf extract toner — Anua Heartleaf 77 Soothing Toner — is doing what people thought COSRX would do, which is calm reactive skin without stripping it.”
She also mentioned Numbuzin, Beauty of Joseon, and Skin1004. “Skin1004 Madagascar Centella Ampoule is what I prescribe to patients with rosacea-adjacent redness. It’s gentler than the Korean centella products from five years ago, which were honestly too acidic for sensitive skin.” According to 2026 market data from Euromonitor International, indie Korean brands grew 34% year-over-year while legacy brands declined 8%. The smart money sees what’s happening.
- Anua — heartleaf-focused barrier repair
- Numbuzin — minimalist serums under 25,000 won
- Beauty of Joseon — sunscreens and rice-based hydrators
- Skin1004 — centella for sensitive skin
- Round Lab — derma-developed cleansers
For my full take on building an effective routine without overspending, see my complete Korean skincare routine guide.
Key Takeaway: Indie Korean brands are formulating smarter than the legacy giants for under 30,000 won.
What About the White Cast Problem with Korean Sunscreens?
This is my pet peeve and I asked her bluntly. Most Korean sunscreens still leave a white cast on darker skin, and the brands keep marketing them globally without fixing the formula. “You’re right,” Dr. Han said immediately. “I have patients from Singapore and Malaysia who fly to Seoul and ask why the sunscreens look chalky on them. The answer is most Korean sunscreens are formulated for our average skin tone, which is in the lighter range of the spectrum.”
She told me the Beauty of Joseon Relief Sun is one of the few that genuinely works across skin tones — chemical filter, no zinc oxide, dries down clear. “Round Lab Birch Juice Moisturizing Sunscreen also performs well, but the formula is heavier.” The Korean Ministry of Food and Drug Safety (MFDS) tightened sunscreen labeling rules in 2025, which has pushed some brands to reformulate, but not all of them. This is just my taste, but I keep a tube of Beauty of Joseon Relief Sun for daily wear and a Japanese Anessa for beach days because Anessa never lets me down.
| Sunscreen | Price | White Cast Risk | Best For |
|---|---|---|---|
| Beauty of Joseon Relief Sun | ₩18,000 | Low | Daily, all skin tones |
| Round Lab Birch Juice | ₩22,000 | Medium | Dry skin |
| Innisfree Daily UV Defense | ₩14,500 | Higher on deeper tones | Lighter skin tones |
Key Takeaway: Beauty of Joseon Relief Sun is the rare Korean SPF that works on most skin tones without the chalk.
How Many Steps Should a Real Routine Have?
I’ve been asked this question maybe 400 times since I started writing about K-beauty, and the honest answer makes brands unhappy. Dr. Han confirmed what I’ve been saying for years: most people need four to five steps, not ten. “The 10-step routine was a marketing concept,” she said. “It worked because it was teachable and shareable. Clinically, layering ten products often introduces more irritation than benefit, especially if you’re using actives.”
Her recommended skeleton: cleanser, hydrating toner or essence, one targeted serum, moisturizer, and SPF in the morning. At night, swap SPF for a treatment product if you’re using one. Dermatologists at Seoul National University Hospital recommend introducing only one new product every two weeks, which lines up with what Dr. Han tells her patients. I tried the full 10-step routine in 2022 because I was a sucker for it, and my skin broke out for six weeks. Lesson learned.
- AM: cleanser → toner → serum → moisturizer → SPF
- PM: cleanser → toner → treatment → moisturizer
- Add one product at a time, two-week gap
- Stop a product immediately if you see new irritation
Key Takeaway: Five steps with the right products beats ten steps with hyped ones, every time.
What’s Worth the Splurge vs. What Should Stay Drugstore?
I asked her to draw the line. “Cleansers and toners — drugstore is fine,” Dr. Han said. “You’re not leaving them on long enough for a 90,000 won price tag to matter. Serums with stable actives like vitamin C, retinal, or peptides — that’s where formulation matters and where I’d spend more.” She mentioned that the Numbuzin No. 5 Vitamin Niacinamide Serum at 28,000 won outperforms several luxury vitamin C serums in stability tests because the formula is fresher and the packaging is opaque.
For sunscreen, she said splurging is pointless above the 25,000 won mark in Korea. “You should be using a coin-sized amount on your face every morning. If you’re using enough sunscreen, a luxury brand becomes financially absurd.” Honestly, considering the price, this is the single most useful piece of advice she gave me. I used to feel guilty about not using La Mer SPF — turns out my Beauty of Joseon was better anyway.
| Step | Splurge or Save | Reasoning |
|---|---|---|
| Cleanser | Save | Rinse-off, minimal contact time |
| Toner | Save | Cheap formulas now match expensive ones |
| Serum (active) | Splurge moderately | Formulation stability matters |
| Moisturizer | Mid-range | Diminishing returns above ₩40,000 |
| Sunscreen | Save | Volume of use makes splurging wasteful |
Key Takeaway: Splurge on serums, save on everything else — the math always wins.
Are Devices Like Microcurrent and LED Masks Worth It?
This is where I expected pushback because I still use a Clarisonic from 2018 once a week, and most dermatologists hate them. Dr. Han surprised me. “Used correctly, mechanical exfoliation devices are fine for most people. The Clarisonic was over-marketed but not harmful. The newer LED masks are more interesting clinically — there’s actual peer-reviewed research on red and near-infrared light for collagen stimulation.”
She mentioned the Dr.Arrivo Zeus and the Cellreturn LED mask as devices she’s seen real results from in her clinic, but she warned against the cheap knockoffs on Coupang. “If the device is under 200,000 won and claims medical-grade LED, it’s lying. The wavelengths and irradiance matter, and budget devices fudge those specs.” Based on 2026 market data, the home beauty device market in Korea grew 27% last year, and Dr. Han said about half of her patients now use some form of device. Between you and me, the LED masks are tempting but I haven’t pulled the trigger because I want to see longer-term data first.
- LED masks: real science but expensive — wait for sales
- Microcurrent: helpful for muscle tone, slow results
- Cleansing brushes: fine if you’re not over-exfoliating
- Avoid sub-200,000 won “medical-grade” devices
Key Takeaway: Real beauty devices work, but cheap ones are theater — pay for verified specs or wait.
What’s the Biggest Mistake You See in Patient Skincare?
“Over-exfoliation,” Dr. Han said without hesitation. “At least three patients a week come in with damaged barriers because they’re using a chemical exfoliant every night plus a physical scrub plus retinal. Their skin is bright red, sensitive to everything, and they think they need more products to fix it.” The fix is almost always to strip the routine back to a gentle cleanser, ceramide moisturizer, and SPF for two to four weeks until the barrier rebuilds.
I made this exact mistake in 2023. I was using The Ordinary Lactic Acid 10% three times a week, plus a Cosrx BHA, plus retinal at night. My skin looked great for two months, then collapsed. I went back to basics — just an Anua Heartleaf toner and a ceramide cream — for six weeks before I rebuilt the routine. According to a 2025 study in the Journal of Cosmetic Dermatology, barrier dysfunction from over-exfoliation can take 6-12 weeks to fully recover. That’s a long time to look like a tomato.
Key Takeaway: Over-exfoliation is the K-beauty injury that nobody warns you about until your skin is already wrecked.
What’s One Trend You Think Will Disappear by 2027?
Dr. Han thought about this for a minute. “The pH-obsessed cleanser trend. Brands have been screaming about 5.5 pH for years, and yes it matters, but it’s been weaponized into marketing. Most decent cleansers are already in the right pH range. The next wave will be about cleanser microbiome impact, which is genuinely under-researched.” She also predicted that snail mucin will plateau as the science behind heartleaf, mugwort, and tigergrass becomes more mainstream.
She also said she expects the “slugging” trend (slathering Vaseline as the last step) to fall off because it’s not appropriate for most adult Korean skin types in summer humidity. “It works in dry American winters. In Seoul in August, you’re cooking your face.” I tried slugging in July last year and broke out for two weeks. Lesson, again, learned.
Key Takeaway: The pH gimmick is on its last legs — microbiome-aware cleansers are next.
Frequently Asked Questions
What’s the best korean skincare routine for beginners on a budget?
Honestly, the cheapest effective routine I’ve built is under 60,000 won total: Round Lab 1825 Dokdo Cleanser (₩12,900), Anua Heartleaf 77 Toner (₩24,000), Beauty of Joseon Glow Serum (₩17,000), and Beauty of Joseon Relief Sun for SPF (₩18,000). Skip moisturizer until you see how your skin reacts — most beginners don’t need one if their toner and serum are hydrating enough. Add one product every two weeks. Dr. Han confirmed this matches what she recommends to first-time patients in her clinic.
Is COSRX still worth buying in 2026?
Some products yes, but it’s no longer best-in-class. The COSRX Advanced Snail 96 Mucin Power Essence is still solid for barrier repair if you respond to snail mucin. But for the same 22,000 won price point, Anua Heartleaf 77 Toner or Numbuzin No. 3 Skin Softening Serum will likely give you better results in 2026. Real talk — I keep one COSRX product in my routine (the centella ampoule for spot treatment) and rotated the rest out last year.
How do I avoid white cast from Korean sunscreen on darker skin?
Stick to chemical filter sunscreens, not zinc oxide formulas. Beauty of Joseon Relief Sun and Round Lab Birch Juice Moisturizing Sunscreen are the two I recommend most often for medium-to-deep skin tones. Apply in thin layers and let each layer dry down for 60 seconds before adding more. If a Korean SPF leaves a cast no matter what, switch to a Japanese option like Anessa or Biore UV Aqua Rich — both work better across the tone spectrum and are easy to find on iHerb or Amazon.
Do I really need a 10-step routine?
No. The 10-step routine was a marketing concept that became gospel. Dr. Han, the dermatologist I interviewed for this piece, recommends a 4-5 step routine for most people: cleanser, toner or essence, serum, moisturizer, SPF. Adding more products often introduces more irritation than benefit. The 2025 research she cited from the Korean Journal of Dermatology found no clinical advantage to routines beyond five steps for adult women without specific skin conditions.
Where should I buy korean skincare outside Korea?
YesStyle and Stylevana ship globally and run regular promotions. iHerb stocks the basics like Beauty of Joseon and Anua. For Singapore and Malaysia readers, Shopee carries most major Korean brands at competitive prices. US and UK readers can find a curated selection on Amazon, though prices run 15-25% higher than YesStyle. Always check expiration dates on YesStyle reviews — some shipments are closer to expiry than others.
How long does it take to see results from a korean skincare routine?
Hydration improvements show within 1-2 weeks. Texture and tone changes take 6-12 weeks because that’s roughly one skin cell turnover cycle. Anti-aging benefits from retinal or peptides take 3-6 months of consistent use. Dr. Han said the patients who see the fastest results aren’t the ones spending the most — they’re the ones being most consistent with a simple routine.
The Bottom Line
If you take three things from this conversation with Dr. Han, take these:
- Glass skin is impossible without good sleep — no serum can replace seven hours of rest.
- Indie Korean brands like Anua, Numbuzin, and Beauty of Joseon are outperforming the legacy giants at lower price points in 2026.
- Most people need a 4-5 step routine, not ten — over-exfoliation is the most common mistake Dr. Han sees in her clinic.
If you want to try one product based on this conversation, my pick is the Anua Heartleaf 77 Soothing Toner. I bought it with my own money, I’ve replaced it three times, and the bottle is currently sitting on my Seongsu apartment counter. You can find it at any Olive Young in Seoul or order it through YesStyle internationally. Last reviewed: 2026.