Did you know one of Korea’s best-selling sunscreens right now almost got wiped off the market five years ago? Round Lab’s Birch Juice Sun Cream survived a brand-wide SPF scandal and came out the other side sweeping beauty awards. Here’s the full story.
The Sunscreen That Almost Didn’t Make It
Back in 2020, Green Cos, the manufacturer behind the original formula, was caught falsifying SPF test results. The problem: Green Cos was also manufacturing sunscreens for several other K-beauty brands at the same time.
It shook trust in Korean sunscreens as a whole. Round Lab wasn’t spared either — the original formula was pulled from shelves entirely.
Then It Got Re-Verified From Scratch
Round Lab switched manufacturing partners and rebuilt the formula from the ground up. In January 2021, an independent lab — the Korea Institute of Dermatological Sciences (KIDS) — retested it and confirmed SPF55 and PA++++.
You probably know what happened next: it went on to sweep Olive Young, Hwahae, and Glowpick beauty awards, becoming one of the most trusted K-beauty sunscreens on the market. Trust earned by surviving a scandal head-on tends to stick.
What Actually Makes It Work
The UV Filters Are Different by Design
This is a chemical sunscreen, using four filters: Uvinal T150 (UVB protection), Uvinal A Plus (UVA protection), Tinosorb M (broad-spectrum UVA/UVB), and Iscotrizinol (UVB and partial UVA).
These are a different category from the Avobenzone and Homosalate common in US sunscreens — approved in Europe and Asia, though not yet cleared by the US FDA. None of the filters are linked to coral reef damage, so it also meets reef-safe standards.
The Hydrating Ingredients Actually Show Up in the Feel
Birch sap, harvested from birch trees, helps calm inflammation and hydrate. On top of that: niacinamide (texture refinement and barrier support), allantoin and purslane extract (soothing), and hyaluronic acid (moisture retention).
That combination is why the most common reaction is some version of “this feels like a moisturizer that happens to be a sunscreen.” Plenty of users skip a separate moisturizer entirely in their morning routine because of it.
Texture and Finish
It starts as a watery-gel texture that spreads easily on contact, then settles into a slightly dewy finish. There’s essentially no white cast, which is why it’s frequently recommended across light to medium skin tones.
No added fragrance, though you’ll notice a faint natural scent from the chamomile oil and mugwort extract in the formula — gentle enough for most fragrance-sensitive users.
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Wear Time and Reapplication
It comes in a travel-friendly 50ml tube. For reapplying over makeup, blot excess oil with a tissue first, then reapply — it’s not designed to be waterproof, so pair it with a dedicated water-resistant sunscreen for swimming or heavy sweating.
It’s also vegan and cruelty-free certified, which makes it a solid pick if you care about ingredient sourcing as much as performance.
Who This Is Actually For
- Anyone tired of white cast from other sunscreens
- People who want to cut a step out of their morning routine (skip the separate moisturizer)
- Anyone comfortable with chemical UV filters
- Shoppers who specifically value a verified safety track record
If you’re mineral-sunscreen-only or need something explicitly waterproof, this probably isn’t your best match.
✅ Quick Recap
- Manufacturing partner replaced after the 2020 SPF scandal
- Independently re-verified in 2021 — confirmed SPF55, PA++++
- Multiple Olive Young, Hwahae, and Glowpick beauty awards
- Key ingredients: birch sap + niacinamide + hyaluronic acid
- Reef-safe, vegan, and cruelty-free certified
- No white cast, strongly hydrating — patch test recommended for sensitive skin
One Last Thing
If you’re looking for a K-beauty sunscreen with a genuinely verified track record, this is a solid place to start. Products that survive a scandal and come out on top usually earned it.
