Today, I want to introduce a sunscreen that Chubby Mom’s family has been really loving and using regularly. It’s great for both men and women, completely fragrance-free, and—best of all—there’s absolutely no white cast! (Seriously, no white cast?!?)


Chubby Mom’s family is super sensitive to skin troubles—some of us even have very delicate skin. But ever since we started using Round Lab’s Birch Moisture Sun Cream, we’ve hardly experienced any breakouts at all! It’s so light and refreshing, yet still totally effective. Honestly, it’s amazing!
Round Lab Birch Moisture Sun Cream
- Product Name: Round Lab Birch Moisture Sun Cream
- Manufacturer: Kolmar Korea Co., Ltd.
- Distributor: Seorin Company Co., Ltd.
- Benefits: UV protection (SPF 50+, PA++++), brightening, wrinkle improvement
- Also blocks blue light! Suitable for sensitive skin (awarded “Excellent” by Germany’s Dermatest)
- Features: Fragrance-free, non-sticky, feels like a gentle moisturizing cream
- Texture: Lightweight, watery
- Volume: 50ml
- Where to Buy: Olive Young, online stores, and more
- Price: Starting around 13,000 KRW
Huh? But sunscreen labels always have these SPF and PA ratings—what do they actually mean?! (So curious!) Since Chubby Mom’s daughter was curious too, I did some homework to explain SPF and PA for anyone else wondering! (Working hard!!)
SPF and PA are international ratings that show how well a sunscreen protects your skin from UV rays. Here’s what each means:
☀️ 1. SPF (Sun Protection Factor)
Meaning: How well it blocks UVB rays
UVB rays cause sunburn and skin damage.
The higher the number, the longer the protection lasts (e.g., SPF 50 protects longer than SPF 30).
⏱ Example:
- SPF 15: blocks about 93% of UVB rays
- SPF 30: blocks about 97% of UVB rays
- SPF 50: blocks about 98% of UVB rays
- Protection time = SPF number × 10–15 minutes (varies by person)
☀️ 2. PA (Protection Grade of UVA)
Meaning: How well it blocks UVA rays
UVA rays cause skin aging and pigmentation.
More plus signs (+) mean stronger protection.
⏱ PA rating explanation:
PA+ | Weak | Basic UVA protection |
PA++ | Moderate | Moderate UVA protection |
PA+++ | Strong | High UVA protection |
PA++++ | Very Strong | Very high UVA protection |
✅ In summary:
- SPF → Prevents skin burns by blocking UVB rays
- PA → Prevents skin aging by blocking UVA rays
⏱ Example product label:
SPF 50+ PA++++
→ Sunscreen that offers the highest level of protection against both UVA and UVB rays
No way!!! So the Birch Moisture Sun Cream with SPF 50+ and PA++++ really provides top-level protection!!! That’s awesome… And about its UV-blocking power—I've seen a YouTube video comparing the effectiveness of various sunscreens before, and this one often ranked first or second across multiple tests. Seriously impressive sunscreen!
What’s really amazing is… can such a light and refreshing texture actually block the sun this well? It feels nothing like the sunscreens I knew—more like a gentle moisturizing cream! I thought that too, but after seeing that test, I was totally blown away! (I’ve found the video and linked it below—check it out!)
【SUB】올리브영 선크림 TOP8 비교 | 안언니, 🔥화상투혼🔥으로 직접 선크림 순위를 매겼다고?
In the video, this sunscreen ranked first for having the least greasiness, the texture was light and watery, and it showed the lowest levels of redness and darkening reactions—also placing first!
As you can see in the photo below, the texture is watery, very gentle, soft, and refreshing. When applied, it feels almost non-sticky—almost like nothing at all. Unlike typical sunscreens that often leave a white cast, this one is completely free of that—more like a moisturizing cream! I highly recommend this product for anyone with sensitive skin or prone to skin troubles, just like Chubby Mom’s family!
After applying, it absorbs moistly and smoothly, and makeup goes on well over it. Even after some time, when you touch your skin, it still feels soft—no stickiness at all. Amazing! This product often ranks #1 at Olive Young, and I absolutely love it! You can also find it cheaper during Olive Young sales or on online stores, so I recommend keeping an eye out for the best price.
Just in case, Chubby Mom’s lab did an oil test… (not very scientific, haha). We pressed oil blotting paper firmly on the applied area, and as you can see in the photo below, very little oil came off. No wonder it felt so light and refreshing! Hope this helps!
Since it’s fragrance-free and not sticky, even Chubby Mom’s son loves using it, so it’s really suitable as a men’s skincare product or men’s sunscreen as well.
Plus, on the Round Lab website, it boasts an impressive rating of 4.83 out of 5!
So, everyone, I hope you protect your skin well this hot summer! That wraps up the post on the sunscreen that Chubby Mom’s family truly loves… (bittersweet goodbye). I promise to share another favorite product next time!
Alright then… signing off! Cheers!!
