Korean Sunscreen for Face: How a Dermatologist Chooses One

I'm Dr. Hongseok Kim, a board-certified Korean dermatologist with 21 years of practice and the medical director of VOS Dermatology Clinic in Gangnam, Seoul, in front of Dosan Park. At VOS I see every patient myself, from the consultation to the treatment.

Visitors often ask me to recommend a Korean sunscreen for face before they shop in Seoul. I don't recommend brands on this page. Instead, I'll show you the criteria I use as a dermatologist, how to apply sunscreen so that the number on the label means something, and how to remove it without damaging your skin. This page is based on my YouTube video from July 2026, which brings together four of my sunscreen videos; it summarizes what I explained there for readers abroad. The video above can be watched with translated captions.

How I judge a Korean sunscreen for face: six criteria

Short answer: I look at scent, how it spreads, moisture, irritation, how cleanly it washes off and how well it actually blocks UV (in the video at 01:23).

For the video, I tested ten popular Korean chemical (organic) sunscreens blind, without knowing which was which. For removal, I applied the recommended amount over the whole face, washed once lightly with a foam cleanser and then cleansed a second time (in the video at 02:04). Chemical sunscreens generally came off cleanly, more easily than mineral ones. To check UV blocking, I applied each product to a figure that turns red in UV light and put it outside; I also misted the products with water and checked them again about two hours later. The top products then went through an eye-sting test.

The scores were close, often only a point apart (in the video at 12:12). Korean chemical sunscreens feel very different from the ones I tried a few years ago: lighter, less greasy, and often with little or no scent. Today almost every product carries SPF 50+ and PA++++ (in the video at 17:23). In Korea, SPF above 50 is labelled simply as 50+, and PA++++ is the highest UVA grade. Brands then add a concept on top: madecassoside or cica for sensitive skin, extra hydration for skin that feels dry after sunscreen. So when you pick a sunscreen, choose the concept that matches your skin and test the texture yourself.

Mineral or chemical: which type suits your skin

Short answer: mineral sunscreen works the moment it is on and suits sensitive or allergy-prone skin; chemical sunscreen spreads more easily and suits healthy skin (in the video at 38:11).

A mineral (physical) sunscreen forms a film that reflects and scatters UV, so you can apply it and go out. It tends to leave a white cast, which is why many tone-up sunscreens are mineral types. A chemical sunscreen absorbs UV in the skin and needs about 30 minutes to settle before you go out (in the video at 19:49). In terms of blocking UV alone, either type is fine (in the video at 41:41). If your skin is sensitive, though, keep the number of ingredients low and use one sunscreen rather than layering two kinds. Some chemical filters can trigger irritation or allergy in sensitive skin, and that is when I tell people to use mineral instead. If you are not sure how your skin behaves, a skin type analysis such as VOS Skin MBTI is how we read it at the clinic.

How much to apply, and how often

Short answer: aim for about 2 mg per square centimetre, roughly a full finger joint for the face, and since almost nobody applies that much at once, apply two layers and top up about every two hours outdoors (in the video at 29:17).

SPF is measured with that tested amount. SPF 50 blocks about 98% of UVB and SPF 100 about 99%, so the difference is mostly in how long protection lasts, not in strength (in the video at 21:08). Apply less and the protection time shrinks: you may think you are covered until mid-afternoon when the protection has already faded by late morning (in the video at 30:48). When I applied a typical dab on camera, it was only a fraction of the needed amount, so I add a second layer (in the video at 40:23).

The SPF in a BB cream or foundation only counts if you wear that product in the same thick amount, which nobody does (in the video at 29:01). Use sunscreen as the base, then top up during the day with a compact or powder that has SPF. Long-term sun exposure is also behind many of the spots and uneven tone I treat, which my guide to Korean dark spot treatment covers.

Indoors, shade, clouds and clothing

Short answer: UVA passes through windows and clouds, and shade and thin cotton block much less than people think (in the video at 21:50).

UVB is mostly blocked by window glass; UVA is not. If you sit beside a large window without UV film, wear sunscreen with PA+++ or PA++++ (broad spectrum on overseas labels), or close the blinds. Ordinary ceiling lights generally do not call for sunscreen (in the video at 24:45). In the shade, scattered and reflected UV still reaches you; measured values there were only around UPF 5 to 15 (in the video at 27:26). A thin cotton T-shirt is about UPF 5, and darker clothing blocks more than white. On a cloudy day UVB drops, but most UVA still reaches the ground, and because it feels cool, people stay out longer without protection (in the video at 35:51). In spring, UV rises sharply around May, so start before summer.

When to wait, removal and vitamin D

Short answer: skip sunscreen on raw, broken or freshly treated skin, remove it gently, and handle vitamin D with a supplement rather than by skipping sunscreen (in the video at 42:56).

When skin is wounded or eczema leaves raw areas exposed, sunscreen ingredients can irritate. After mole removal I usually tell patients to wait at least three days to a week; my page on mole removal in Korea explains aftercare. On healthy skin, sunscreen is not a problem. If you sweat heavily and dust sticks to your face in summer, whether to wipe and reapply is a judgement call; the most important step is applying enough properly in the morning (in the video at 44:28). Vitamin D matters, but in the tests I have run, most people were below the normal range anyway, so I suggest taking a supplement rather than exposing skin to UV on purpose (in the video at 32:35).

Before and after swimming

Short answer: shower before you swim, rinse right after, moisturise, and reapply sunscreen every time you come out of an outdoor pool (in the video at 50:05).

Chlorine and the compounds it forms can dry skin and raise the chance of irritant dermatitis. Wetting your hair and skin with clean water first reduces how much pool water they take up. For mild eczema, a thin layer of petroleum jelly on the face and neck acts as a barrier (in the video at 52:38). Outdoors, mineral sunscreens tend to stay on better, but water-resistance tests do not include splashing and playing, so reapply after each swim (in the video at 54:10). If red bumps around the hair follicles do not settle, see a dermatologist. My thoughts on why Korean skin looks so good come back to these daily habits, and our creator experiences at VOS show how visitors combined clinic care with their routine.

Results vary from person to person, and the right plan for your skin is decided at an in-person consultation.

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Results, swelling and recovery vary from person to person. This page is general information from VOS Dermatology Clinic based on Dr. Kim's video and does not replace an in-person consultation.