This Korean SPF Is So Good That It's Become My Go-To Formula

Ask any dermatologist or aesthetician, and they'll tell you that sunscreen is the most critical step in a skincare routine. Without it, all of the other steps, including expensive serums, toners, and moisturisers, are for naught. That's because the sun's UV rays will accelerate ageing, create new skin concerns and most importantly, increase the potential for serious health issues.

Knowing this, I'm super diligent about applying daily sunscreen, but not just any old sunscreen. I've been a beauty editor for close to 10 years. After trying almost every sunscreen formula under the sun (pun intended), I have a strict set of standards for my daily SPF. First, it must be a sensorial delight to apply. I'm talking about a lightweight feel, smooth texture, and absolutely no pilling (under any circumstances). Second, it must provide adequate, broad-spectrum sun protection. (I always aim for SPF 30 or higher.) Third, it must make my skin look better than it did before. Yep. I won't settle for just okay. And I definitely won't settle for a white cast. I want my sunscreen to make my skin look hydrated, plump, and dewy.

Recently, I tried a new Korean sunscreen that checked off every box and more. The best part? It's expert-approved. Billie Eilish's aesthetician gave it a stamp of approval. Keep scrolling to see which sunscreen I won't shut up about.

Round Lab

Birch Juice Moisturizing UV Lock Sunscreen SPF 45

SPF: 45 | Type: Chemical | Size: 1.69 oz | Ingredients: Birch sap, allantoin, purslane

Benefits: Broad-spectrum sun protection, blue light protection, antioxidant protection, hydration, skin-soothing formula

Here's the sunscreen in question—Round Lab Birch Juice Moisturising UV Lock Sunscreen SPF 45. The chemical formula offers broad-spectrum SPF 45 plus blue-light protection, with a combination of avobenzone, homosalate, and octisalate. It's the other key ingredients that really set it apart from other formulas I've tried. First, there's the hero ingredient, birch sap, which is an antioxidant and anti-inflammatory. Second, there's allantoin, which is a skin-soothing ingredient. Third, there's Portulaca oleracea extract, which is an antioxidant-rich ingredient that also goes by purslane. Add in skin-quenching humectants, and you have a next-level sunscreen.

The milky formula is so lightweight I don't feel like I'm wearing any sunscreen at all, and I can apply makeup over top of it with zero issue. (I never experience any pilling, creasing, or smudging.) It melts into the skin, so there's no need for harsh rubbing or blending. The best part? There's absolutely no white or grey cast, just smooth, plump and protected skin. Can you see why I'm obsessed with it now?

Shop More Editor-Approved K-Beauty Products:

Beauty of Joseon

Relief Sun: Rice+Probiotics SPF50+

Beauty of Joseon's internet-famous Daily Relief Sunscreen is another K-beauty fave.

COSRX

Advanced Snail 96 Mucin Power Essence

This snail mucin essence totally lives up to the hype.

LANEIGE

Laneige Lip Glowy Balm Matcha Bubble Tea

I love Laneige's shiny lip balms, and I can't wait to try this Matcha Bubble Tea version.

BIODANCE

Bio-Collagen Real Deep Mask Pack of Four

If you want to wake up with glass skin, wear this mask while you sleep.

Dr. Jart+

Every Sun Day Ultra Sheer Priming Sunscreen Stick SPF 30

Sunscreen sticks, like this one from Dr.Jart+, make reapplication so easy.

Innisfree

Green Tea Seed Hyaluronic Cream 50ml

This cooling, gel moisturiser is the ultimate skin soother.

MEDIHEAL

Collagen Ampoule Pad

I love Korean toner pads. These collagen ones are my current obsession.

PEACH & LILY

Glass Skin Refining Serum

Trust me on this. You need to try Peach & Lily's Glass Skin Serum.

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Kaitlyn McLintock is a Beauty Editor at Who What Wear. She has 10 years of experience in the editorial industry, having previously written for other industry-leading publications, like Byrdie, InStyle, The Zoe Report, Bustle, and others. She covers all things beauty and wellness-related, but she has a special passion for creating skincare content (whether that's writing about an innovative in-office treatment, researching the benefits of a certain ingredient, or testing the latest and greatest at-home skin device). Having lived in Los Angeles, California, and Austin, Texas, she has since relocated back to her home state, Michigan. When she's not writing, researching, or testing beauty products, she's working through an ever-growing book collection or swimming in the Great Lakes.