K-Beauty

Trusted by First 200+ Customers

30-Day Satisfaction Guarantee

   Discover why Round Lab Birch      Juice Moisturizing Sun Cream SPF50+ PA++++ is a top K-beauty sunscreen — lightweight, soothing, and proven broad protection.

  • By Vickie Le

Published: Wednesday, November 12, 2025

Concerning Round Lab and the Korean Sunscreen Debate
K-beauty company Round Lab was established in 2017. The Dokdo islands conflict between South Korea and Japan inspired the name of this clean beauty brand's first and best-selling skincare product.

Among its iconic products, the Round Lab Birch Juice Moisturizing Sun Cream SPF50+ PA++++ stands out as one of the most trusted Korean sunscreens today. The brand's sunscreen was among the most well-liked in 2022, and it continues to be popular on social media, particularly TikTok. The original composition of Round Lab Birch Juice Moisturizing Sunscreen, which was taken off the market in 2020, has been modified.

It was discovered that Green Cos, the company that produced the first iteration of Round Lab Birch Juice Moisturizing Sun Cream SPF50, had faked the sunscreens' SPF ratings. The reputation of K-beauty sunscreens suffered because Green Cos also produced the sunscreens for numerous Korean beauty brands.

The SPF and PA protection levels of Round Lab Birch Juice Moisturizing Sunscreen are determined by testing conducted by the Korea Institute of Dermatological Sciences.

In January 2021, the Korea Institute of Dermatological Sciences, an independent laboratory, confirmed the SPF and PA ratings of this updated version of Round Lab Birch Juice Moisturizing Sun Cream SPF50+. According to tests conducted on ten individuals (a mix of male and female), the sunscreen offered SPF 55 and UVA protection of 19.8 (PA ++++).

 

Round Lab Birch Juice Moisturizing Sunscreen's coverage
• SPF 50+ for UVB
• UVA: PA ++++

Round Lab Birch Juice Moisturizing Sunscreen's sunscreen filters
• Chemical filters: Iscotrizinol, Tinosorb M, Uvinul A Plus, and Uvinul T 150

Notable components or attributes of Round Lab Birch Juice Moisturizing Sunscreen
• Niacinamide: This antioxidant has a number of advantages, such as enhancing moisture and the skin barrier.
• Allantoin: Derived from plants like chamomile and comfrey, it has calming and moisturizing effects on the skin.
• Betula Platyphylla Japonica Juice (birch sap juice): Offers anti-inflammatory and hydrating properties.
• Portulaca Oleracea Extract: Provides moisturizing, anti-aging, and anti-inflammatory benefits.
• Pinus Sylvestris Leaf Extract: Supports skin barrier repair and cell turnover.
• Chamomilla Recutita Flower Oil: Contains bisabolol and antioxidants but may cause allergic reactions in sensitive users.

 

Round Lab Birch Juice Moisturizing Sunscreen's benefits
The Round Lab Birch Juice Moisturizing Sun Cream SPF50+ PA++++ offers broad-spectrum protection while keeping skin comfortable and calm. Independent tests validate its UVA and UVB protection. Its lightweight texture leaves no white cast and feels smooth and breathable on the skin.

Users have praised Round Lab Birch Juice Moisturizing Sunscreen for its fast absorption, non-greasy finish, and compatibility with makeup. Those with oily or acne-prone skin especially enjoy its matte, non-tacky texture.

 

Round Lab Birch Juice Moisturizing Sunscreen's drawbacks
Despite its name, Round Lab Birch Juice Moisturizing Sun Cream SPF50 may not feel hydrating enough for dry skin types. Applying a moisturizer beforehand is recommended. Additionally, some users sensitive to chamomile oil should patch-test before use.

 

Verdict on Round Lab Birch Juice Moisturizing Sunscreen
Overall, Round Lab Birch Juice Moisturizing Sunscreen — also known as Round Lab Birch Juice Sunscreen — remains a favorite in K-beauty routines for its trustworthy protection and featherlight feel. Whether you choose the Round Lab Birch Juice Moisturizing Sun Cream SPF50+ or the Round Lab Birch Juice Moisturizing Sun Cream SPF50+ PA++++, this product delivers reliable sun defense in a clean, elegant formula.

Frequently Asked Questions

1. What is Round Lab Birch Juice Moisturizing Sun Cream SPF50+ PA++++ used for?

Round Lab Birch Juice Moisturizing Sun Cream SPF50+ PA++++ is a Korean sunscreen that provides broad-spectrum protection against UVA and UVB rays. It also helps hydrate and soothe the skin with birch juice extract, niacinamide, and allantoin.

2. Is Round Lab Birch Juice Moisturizing Sunscreen suitable for sensitive skin?

Yes. The formula of Round Lab Birch Juice Moisturizing Sunscreen is lightweight, alcohol-free, and designed for sensitive skin. It contains calming ingredients like birch sap and purslane extract that reduce irritation while protecting your skin.

3. Does Round Lab Birch Juice Moisturizing Sun Cream SPF50+ leave a white cast?

No. This sunscreen has a fast-absorbing texture and leaves no white cast or greasy residue, making it ideal for daily use under makeup or alone.

4. Can I use Round Lab Birch Juice Sunscreen with makeup?

Absolutely. Round Lab Birch Juice Sunscreen has a smooth, non-sticky finish that layers well under makeup. It helps create a soft, hydrated base for foundation without pilling.

5. Is Round Lab Birch Juice Moisturizing Sun Cream SPF50+ PA++++ good for oily or acne-prone skin?

Yes. The lightweight, non-comedogenic texture of Round Lab Birch Juice Moisturizing Sun Cream SPF50+ PA++++ makes it perfect for oily and acne-prone skin. It provides strong UV protection without clogging pores.

6. How should I apply Round Lab Birch Juice Moisturizing Sunscreen for best results?

Apply two fingers’ length of Round Lab Birch Juice Moisturizing Sunscreen evenly to your face and neck as the final step of your skincare routine. Reapply every two to three hours when exposed to sunlight for maximum protection.

Hurry up! Sale 10% CODE SAVE10

Sale ends in:

00
Days
00
Hrs
00
Mins
00
Secs

Gentle and safe for sensitive skin

Boosts your skin’s natural regeneration

Packed with skin-loving polynucleotides and nutrients

Enhances skin strength and promotes firmness

Check Availability

30-day money back guarantee

Round Lab Collections

Unlock the secret to smoother, firmer, and healthier skin

  • Quality

  • Science

  • Beauty

Cart
Close
Back
Account
Close