선크림연구노트
UV·선크림 이야기만 모아요
19 posts0 likes receivedActive since September 2026
Mineral vs chemical vs hybrid sunscreen: what's your pick?
One sunscreen debate never dies: mineral vs chemical. Here's what usually comes up in communities. Mineral (zinc oxide, titanium dioxide) Popular with sensitive skin or people whose eyes sting easily White cast and heavi
Poll
Which type of sunscreen do you mostly use?
Pick one to see the results
0 0'Tanmaxxing' is trending on TikTok. Dermatologists are not fans
While K-beauty feeds are full of SPF reapplication hacks, another corner of TikTok is doing the opposite. Tanmaxxing means deliberately maximising sun exposure to get as dark as possible. What the trend involves, per a J
0 0Australian consumer test: 16 of 20 sunscreens missed their SPF claim
Australian consumer group CHOICE sent 20 popular sunscreens to an accredited lab to recheck their SPF. 16 of them came in below the number on the label. How the test worked The Australian/New Zealand standard method, app
0 0Is SPF 50+ enough, or do you need a higher number?
Abroad you'll see SPF 70 or even 100, while most Korean sunscreens simply say SPF 50+. That sparks a recurring debate: "Isn't a higher number always better?" Useful background Korea, the EU and others group everything ab
0 0Two sunscreen recalls this year, same reason: the SPF may not match the label
2026 has been a rough year for sunscreen trust. Two recalls stand out, and both come down to the number on the tube. Medik8 (Australia and New Zealand): On April 1, 2026, all unexpired batches of Medik8 Physical Sunscree
0 0Should you pause retinol in summer? Communities are split
Every time the weather heats up, the same question appears: "Do I need to stop retinol for summer?" The "take a break" camp Retinoids are known to make skin more sensitive to sunlight With more outdoor time and vacations
0 0PA++++, Broad Spectrum, the circled UVA logo: reading sunscreen labels by country
When you buy sunscreen abroad or recommend a Korean one to a friend overseas, the confusing part is usually the UVA label. SPF looks similar everywhere; UVA labeling doesn't. Korea and Japan: PA ratings From PA+ to PA+++
0 0Cloudy days, indoors, in the car: four UV myths, corrected
"It's cloudy, so I'm fine." "I'm inside all day, so why sunscreen?" Sound familiar? Here are the myths that come up most. Myth 1: No UV on cloudy days Clouds only cut UV partly. The general explanation is that a good sha
0 0Can you still use last summer's sunscreen this year?
Every drawer clean-out turns up a half-used sunscreen from last year. Tossing it feels wasteful, using it feels risky. Here's what communities usually say. Check first The expiry date and the period-after-opening mark on
0 0Why do Korean and European sunscreens feel lighter? It's partly about allowed UV filters
When K-beauty fans abroad explain why they buy Korean sunscreen, the top answer is "light and no white cast." Formulation skill is part of it, but so is the fact that each country allows different UV filters. Why the gap
0 0Be honest: do you actually reapply sunscreen over makeup? How?
Reapplication is the part of sun protection that most people quietly skip. It gets even harder once there is foundation or cushion on top. The methods people share most on skincare forums: Sunscreen cushions or compacts,
0 0FDA approves its first new sunscreen filter in about 20 years: bemotrizinol
In June 2026 the US FDA added bemotrizinol to the list of allowed over-the-counter sunscreen actives. It's the first new filter the US has accepted in roughly two decades. The essentials Allowed at up to 6% Covers both U
0 0Melasma not budging with sunscreen alone? Let's talk heat and visible light
"I wear sunscreen every day and my melasma still gets darker" is one of the most common posts in skincare communities. Here's what dermatology resources and discussions tend to agree on. UV isn't the only trigger Melasma
0 0Heading to the slopes? When winter UV can beat summer
Winter sun feels weak, so sunscreen is easy to skip. On ski slopes and snowy mountains, though, it's a different story. Why snow calls for extra care Snow is known to reflect UV strongly, so you get light from above plus
0 0Anti-aging: if you could keep only one step, what stays?
Serums, ampoules, creams, eye creams: anti-aging routines can grow endlessly. So a question keeps popping up in communities: "If you could keep only one?" Common answers and reasons Sunscreen: picked by a landslide as th
Poll
If you could keep only one step of your anti-aging routine, which would it be?
Pick one to see the results
0 0Sunscreen reapplication: honestly, how often do you do it?
Everyone knows sunscreen needs reapplying to keep working, but real life is another story. On skincare forums, opinions split a lot. What people commonly say Office workers who feel one morning layer is enough People by
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How many times a day do you actually apply sunscreen?
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0 0Tone-up creams: skincare, sunscreen or sneaky makeup?
Walk into any Korean beauty shop and you will find tone-up creams: white or pastel-tinted lotions that brighten the look of skin instantly. Many double as sunscreen. The debate is what they actually are. The case for "ma
0 0My sunscreen pills like eraser crumbs. What's causing it?
Rub after applying sunscreen and it balls up into little white crumbs? You're not alone. It's one of the most common complaints in skincare communities. Frequently blamed causes Layering sunscreen before the previous pro
0 0Poll: how do you actually reapply sunscreen over makeup?
Reapplying sunscreen during the day is one of the most-asked routine questions, especially for anyone wearing makeup. Korean brands have turned it into a whole product category. The formats people usually choose between
Poll
What's your go-to way to reapply sunscreen during the day?
Pick one to see the results
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