Korea's Watchdog Flags 4-MBC in Popular Sunscreens (July 2025)
Korean sunscreens dominate global wishlists, but a July 2025 domestic audit shows even legal filters can hide EU-flagged concerns - here's how to read the label.
In a July 2025 review of 38 sunscreens sold in Korea, the Korea Consumer Agency found four products contained 4-methylbenzylidene camphor (4-MBC), and one (Innolab) failed to list it on the label. The agency recommended that brands stop using the ingredient.
Consumer-safety regulators note that legality in one market is not a universal safety verdict: the same UV filter can be permitted in one country while being phased out elsewhere over endocrine-disruption concerns, which is why label transparency matters.
Questions we get a lot
What is 4-MBC and why is it controversial?
4-methylbenzylidene camphor (4-MBC) is an organic UV filter used in some sunscreens. It has been linked to endocrine-disruption concerns, which is why the EU has moved to restrict it. Korea's Consumer Agency flagged it in a July 2025 review and recommended brands stop using it.
How many sunscreens did Korea's watchdog test, and what did it find?
The Korea Consumer Agency reviewed 38 sunscreens sold in Korea. It found four products contained 4-MBC, including one (Innolab) that did not list the ingredient on its label. The agency recommended that brands discontinue its use.
Does this mean Korean sunscreens are unsafe?
No. The finding concerned a small number of products and a single flagged filter, not Korean sunscreens as a category. The takeaway is to read ingredient lists and understand that a market-legal filter may still carry concerns flagged elsewhere.
r/AsianBeauty: 'I stockpiled Korean sunscreens - should I be worried about 4-MBC now?'