The Best Korean Sun Serums That Don't Feel Like Sunscreen
Think sunscreen has to be greasy, heavy, or uncomfortable? Not anymore. Korean sunscreen formulations continue to evolve, and the latest generation of sun serums feels more like lightweight skincare than traditional sunscreen. Drawing on my background as a medical doctor and qualified cosmetologist, I've selected six formulas that truly stand out for their ingredients, texture, and overall formulation.
Quick Picks
Best Overall
Medicube No Cast Just Dew PDRN Hydrating UV Sun Serum
Best for Oily Skin
Fromrier EGF Cica Water Sun Ampoule
Best for Sensitive or Redness-Prone Skin
SKIN1004 Madagascar Centella Hyalu-Cica Water-Fit Sun Serum
Best for Dry and Dehydrated Skin
Round Lab Birch Juice Moisturizing Sun Serum
Best for Normal to Dry Skin
Mediheal Madecassoside Moisture Sun Serum
Best for a Refreshing Finish
Innisfree Daily UV Dewy Barrier Sun Serum
In This Article
If You Still Hate Wearing Sunscreen, Read This First
Despite years of warnings from dermatologists, sunscreen misinformation continues to spread across social media. The 2026 American Academy of Dermatology’s (AAD) annual Practice Safe Sun Survey revealed some worrying findings: more than 16 million Americans reported reducing or stopping sunscreen use because of misleading online claims. Nearly half of all adults—and almost two-thirds of Gen Z—said they had encountered sunscreen misinformation online.
As someone who has tested and reviewed countless sunscreens, I find this trend difficult to understand. Modern formulas are lighter, more elegant, and more comfortable to wear than ever before, so the old excuse that sunscreen feels greasy or unpleasant simply doesn't hold true for many of today's products. Yet misinformation continues to fuel tanning myths and discourage sunscreen use, increasing the risk of sunburn, premature skin aging, and ultimately, skin cancer.
With this guide, I want to show just how far sunscreen formulas have evolved and introduce, in my professional opinion, the best Korean sun serums available today. Sun serums are a new generation of sunscreens that combine high-level UV protection with the lightweight, elegant feel of a skincare serum. If you've been avoiding sunscreen because it felt heavy, greasy, or uncomfortable in the past, I hope this guide will change your mind.
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What Is the Difference Between a Sunscreen and a Sun Serum?
The main difference isn't the UV protection. Both sunscreen creams and sun serums can provide broad-spectrum SPF 50+ protection when properly formulated. The real difference lies in the texture and the overall formulation.
Traditional sunscreen creams usually contain a higher amount of emollients and waxes, giving them a richer, creamier feel. Sun serums are formulated with a lighter, more fluid base and often include additional skincare ingredients such as humectants, antioxidants, peptides, or soothing botanical extracts. Despite the name, don't expect a watery facial serum. Most sun serums have a lightweight, milky texture that spreads effortlessly and absorbs quickly.
This newer texture is particularly appealing for oily, combination, or acne-prone skin, as well as anyone living in warm or humid climates where heavier sunscreens can feel uncomfortable. They also layer beautifully under makeup and encourage more consistent daily sunscreen use simply because they feel so pleasant on the skin.
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See What's Inside →Medicube No Cast Just Dew PDRN Hydrating UV Sun Serum
Where to buy
⭐ Key Formula Highlights
- PDRN (Sodium DNA)
- 5% niacinamide
- Ceramide NP + cholesterol + hydrogenated lecithin
⚠️ Keep in Mind
- Not fungal acne safe
- Not vegan
This year, Medicube launched two new sunscreens: No Cast Just Dew PDRN Hydrating UV Sun Serum and No Cast Just Glow Collagen Glow Sunscreen. After trying both, the Hydrating UV Sun Serum is easily my favorite. I expected it to be lightweight, but I didn't expect it to feel this lightweight.
Medicube puts a lot of emphasis on PDRN, but I actually think that's the least interesting part of the formula. PDRN (listed as Sodium DNA) sits quite low on the ingredient list, so I wouldn't choose this sunscreen because of that. What makes it worth buying is everything else.
The formula combines 5% niacinamide with ceramide NP, cholesterol, and hydrogenated lecithin, making it a great option if you want a sunscreen that does more than just provide UV protection. The niacinamide is particularly nice if you're dealing with excess sebum, enlarged pores, post-acne marks, or uneven skin tone.
I also appreciate that Medicube skipped the fragrance and essential oils. Combined with the incredibly lightweight texture, it's a sunscreen I'd happily recommend for all skin types, including sensitive skin.
SKIN1004 Madagascar Centella Hyalu-Cica Water-Fit Sun Serum
Where to buy
⭐ Key Formula Highlights
- 9,800 ppm Centella asiatica extract
- Hyalu-Cica complex
- Botanical antioxidant complex
⚠️ Keep in Mind
- Not fungal acne safe
SKIN1004's Madagascar Centella Hyalu-Cica Water-Fit Sun Serum has consistently been one of the most popular Korean sunscreens, especially among people with oily and combination skin. After trying it, I completely understand why. The texture is exceptionally lightweight and comfortable, making it one of those sunscreens that's easy to wear every single day.
The formula is built around Centella asiatica and a blend of botanical antioxidants, including green tea, ginkgo, birch bark, and several plant extracts that help protect the skin from environmental stress. It also contains multiple forms of hyaluronic acid, making it a great choice if your skin tends to become dehydrated, even if it's oily.
I recommend this sunscreen for skin that becomes easily flushed or uncomfortable during the summer. If you have redness, spend a lot of time outdoors, or are already noticing the first signs of sun damage and premature aging, the high concentration of centella makes this an easy recommendation. It's also fragrance-free and essential oil-free, making it another excellent option for sensitive skin.
Round Lab Birch Juice Moisturizing Sun Serum
Where to buy
⭐ Key Formula Highlights
- Birch sap as the second ingredient
- Multi-weight hyaluronic acid complex
- Betulin
⚠️ Keep in Mind
- Contains essential oils
- Not fungal acne safe
Round Lab also launched two sun serums this spring. While the Camellia Deep Collagen Firming Sun Serum is aimed more at firming and anti-aging, the Birch Juice Moisturizing Sun Serum focuses on deep, long-lasting hydration. If your skin often feels dehydrated, this is the one I'd reach for.
The formula is built around birch sap instead of plain water and combines it with multiple forms of hyaluronic acid, hydroxyethyl urea, glyceryl glucoside, and amino acids to help keep the skin hydrated throughout the day. It also contains niacinamide and betulin, alongside several soothing plant extracts, making it a nice option if you're looking for a sunscreen that does more than just provide UV protection.
Compared with the Medicube and SKIN1004 sun serums, this one has a slightly richer texture. It's still lightweight by sunscreen standards, but I think it suits normal, combination, and slightly drier skin better than very oily skin. The only thing I'd keep in mind is that it contains essential oils, so if your skin is highly sensitive or easily irritated, I'd probably choose one of the fragrance- and essential oil-free formulas instead.
Fromrier EGF Cica Water Sun Ampoule
Where to buy
⭐ Key Formula Highlights
- EGF (sh-Oligopeptide-1)
- Beta-glucan
- Centella asiatica
⚠️ Keep in Mind
- Not fungal acne safe
If texture is your top priority, Fromrier is the clear winner on my list. It has the most fluid texture of all the products featured here, almost completely runny, which explains why the brand calls it a sun ampoule rather than a sun serum. If you dislike the feeling of multiple skincare layers on your face, this formula is hard to beat.
The name puts a lot of emphasis on EGF, but that's mostly marketing. The growth factor (sh-Oligopeptide-1) is present at just 0.01 ppm, so if you're looking for the benefits of growth factors, you're much better off choosing a dedicated EGF serum with a meaningful concentration.
Instead, I'd choose this sunscreen because of its exceptionally lightweight texture and well-balanced formula. It also contains niacinamide, beta-glucan, hydrolyzed hyaluronic acid, hydrogenated lecithin, and several soothing botanical extracts. While these ingredients appear lower on the ingredient list, that has no impact on the sunscreen's UV protection.
If you have oily skin, live in a humid climate, or simply prefer sunscreens that feel almost weightless, this is one of the best choices on this list.
Mediheal Madecassoside Moisture Sun Serum
Where to buy
⭐ Key Formula Highlights
- Complete Centella complex (madecassoside, asiaticoside, madecassic acid, asiatic acid)
- Saccharomyces ferment filtrate
- Hydroxyethyl urea
⚠️ Keep in Mind
- Contains fragrance and essential oils
- Not fungal acne safe
Mediheal is probably best known for its Madecassoside line, which includes several excellent products, so it makes perfect sense to see a sunscreen join the collection. The formula starts with a solid base of niacinamide and arginine, then builds on that with multiple Centella-derived ingredients, including madecassoside, madecassic acid, asiatic acid, and asiaticoside. I also like the addition of Sphingomonas Ferment Extract, which is becoming an increasingly popular ingredient in barrier-supporting skincare.
Compared with the previous sun serums on this list, this formula feels slightly more nourishing. Ingredients like jojoba oil, hydroxyethyl urea, and several humectants make it a better fit for normal to dry skin, or for anyone looking for a more comfortable sunscreen during the colder months.
The only thing that disappoints me is the amount of fragrance and essential oils. They're not the citrus oils that tend to be the most sensitizing, but if your skin is highly reactive, I'd still be inclined to choose one of the fragrance-free options instead. That's a shame because the rest of the formula is genuinely well designed.
Innisfree Daily UV Dewy Barrier Sun Serum
Where to buy
⭐ Key Formula Highlights
- Ceramide NP
- Multi-weight hyaluronic acid complex
- Allantoin
⚠️ Keep in Mind
- Contains fragrance and essential oils
- Not fungal acne safe
When I think of Innisfree, one ingredient immediately comes to mind: green tea. It's one of the brand's signatures, and I'm glad to see it included here alongside multiple forms of hyaluronic acid, ceramide NP, and allantoin. Together, they help support hydration and the skin barrier, making this a well-rounded everyday sunscreen.
What really sets this formula apart from the others on this list is the amount of essential oils. It contains lemon peel, spearmint, citronella, cardamom, and galbanum oils, giving it a noticeably fresh and refreshing feel on the skin. If you enjoy that sensory experience and your skin tolerates essential oils well, I think this is a lovely sunscreen to wear.
On the other hand, if your skin is very sensitive, easily irritated, or you're dealing with an active acne flare-up, I'd probably choose one of the fragrance- and essential oil-free options instead. That doesn't make this a bad sunscreen—it simply means it's not the most universal formula in this roundup.
Which Korean Sun Serum Is Right for You?
🥇 My overall favorite: Medicube No Cast Just Dew
If you're looking for one sunscreen that works well for almost every skin type, this would be my first recommendation. The combination of an ultra-lightweight texture, 5% niacinamide, and a barrier-supporting formula makes it the most well-rounded option on this list.
💧 For dehydrated skin: Round Lab Birch Juice
The most hydrating formula thanks to birch sap, multiple forms of hyaluronic acid, and additional moisturizing ingredients. Best if your skin often feels tight or dehydrated.
🌿 For redness-prone or sensitive skin: SKIN1004 Hyalu-Cica
A lightweight formula with a high concentration of centella, multiple antioxidants, and no fragrance or essential oils.
🌡️ For oily skin or humid weather: Fromrier EGF Cica
The most fluid texture on this list. If you hate feeling sunscreen on your face, this is probably the closest you'll get.
❄️ For normal to dry skin: Mediheal Madecassoside
A slightly more nourishing formula with several Centella-derived ingredients. Just keep in mind that it contains fragrance and essential oils.
🍃 If you enjoy fresh botanical formulas: Innisfree Daily UV Dewy Barrier
A refreshing sunscreen with green tea, ceramides, and hyaluronic acid. Best suited for skin that tolerates essential oils well.
Frequently Asked Questions
Do I use a sun serum instead of sunscreen?
Yes. Despite the name, a sun serum is still a sunscreen and should be applied as the final step of your morning skincare routine before makeup. The "serum" part refers to its lightweight texture, not its function.
Where does a sun serum fit into my skincare routine?
After your moisturizer (or as your last skincare step if you skip moisturizer), before makeup.
How much sun serum should I apply?
The amount is exactly the same as with any other facial sunscreen. Aim for about two finger lengths to achieve the SPF protection stated on the label. Because many sun serums have a thinner texture, you may find it easier to apply them in two thin layers rather than all at once.
Do I still need to reapply a sun serum?
Yes. A sun serum should be reapplied every two hours during prolonged sun exposure, or after swimming, sweating, or towel drying, just like any other sunscreen.
Can I skip my moisturizer if I use a sun serum?
Sometimes. Many sun serums are hydrating enough for oily skin or humid weather, but people with dry skin often benefit from using a moisturizer underneath.
Are sun serums less protective than regular sunscreens?
No. As long as you apply the correct amount, a sun serum with SPF50+ PA++++ provides the same level of UV protection as a traditional sunscreen with the same tested rating. The difference is mainly in the texture.
Keep Exploring Korean Skincare
I hope this guide helped you find a Korean sun serum you'll actually enjoy wearing every day. But sunscreen is only one piece of a good skincare routine.
Whether you're dealing with acne, hyperpigmentation, redness, dehydration, or healthy aging, you'll find more evidence-based skincare guides throughout my blog, along with carefully selected product recommendations for different skin concerns and skin types.
Not sure where to start? Take my Skin Type Quiz to discover your skin type and get personalized product recommendations in just a few minutes.
Looking for more personalized advice? Explore my Personalized Skincare Consultation options, where I'll create a routine tailored to your skin, concerns, budget, and goals.
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