ROUND LAB - Birch Juice Moisturizing Sunscreen 50ml
Moisturizing sunscreen that protects skin from harmful UV rays while replenishing moisture.
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Specifications & Heritage
- Net Volume / Size
- 50ml
- Skin Type
- All Skin Types
- Texture
- Lightweight lotion
- Finish & Feel
- Natural glow
- Country of Origin
- Made in South Korea
- PAO / Shelf Life
- 12M after opening
The Science, Ingredient by Ingredient
Cross-verified against the European CosIng and EWG databases.
How to Read, Choose & Use a Sunscreen
Sunscreen is the single most effective anti-aging and skin-protection step — but only if you pick the right one and use enough of it. Here is what actually matters.
What People Actually Say
Verified voices from r/AsianBeauty, YouTube dermatologists, and Instagram editors.
Birch Sap Hydration & UV Defense Science
Clinical analysis of the Birch Juice base formula and mineral-hybrid UV filter system delivering SPF50+/PA++++ protection with intensive moisturisation for dry and sensitive skin types.
Birch Juice (Betula Platyphylla Juice)
Replacing conventional water with birch sap as the formula base, this sunscreen delivers naturally occurring Betulin, Xylitol, and amino acids that provide superior hydration, anti-inflammatory soothing, and a unique luminous skin finish unavailable from conventional water-based formulas.
Niacinamide & Ceramide Barrier Shield
Niacinamide at an effective concentration strengthens the skin barrier and suppresses UV-induced melanin production, while a Ceramide complex replenishes the lipid barrier depleted by UV exposure, preventing post-sun moisture loss and sensitivity.
How to Select a Moisturising Daily Sunscreen for Dry Skin
Key criteria for choosing sunscreens that provide SPF50+/PA++++ UV defence while actively treating dryness, dehydration, and a weakened moisture barrier.
Look for a Hydrating Base Ingredient, Not Just Added Humectants
The most effective moisturising sunscreens use a hydrating liquid as the formula base — such as birch sap, aloe vera juice, or thermal water — rather than simply adding Hyaluronic Acid to a conventional water base.
Verify Ceramide or Barrier Lipid Inclusion
UV exposure depletes natural ceramides from the skin barrier. Sunscreens that include ceramides or plant-derived barrier lipids provide both protection and active repair, preventing post-sun dryness and sensitivity.
Confirm Suitability for Sensitive & Eczema-Prone Skin
Moisturising sunscreens designed for dry skin must be free of fragrance, essential oils, and high-alcohol content. Look for dermatologist or allergy-tested certification specifically for dry and sensitive skin types.
Moisturising Sunscreen Application Protocol
A step-by-step morning protocol for maximising the hydrating benefits and UV protection of the Birch Juice sunscreen.
Apply as the Final Skincare Step
Complete your full morning skincare routine before applying. For dry skin, ensure a moisturiser is applied first — the Birch Juice sunscreen seals in the underlying hydration layers while providing UV defence on top.
Apply Generously for Full SPF Efficacy
Dispense a generous amount — approximately 1/4 teaspoon for the face — and spread evenly using upward strokes. Insufficient quantity is the most common cause of inadequate SPF protection in daily sunscreen use.
Allow 15 Minutes, Reapply Every 2 Hours
Allow 15 minutes before outdoor sun exposure. Reapply every 2 hours during continuous outdoor activity. The Birch Juice base makes reapplication comfortable without the tight, chalky feeling common in other SPF products.
Brand Heritage & Official Direct Store
ROUND LAB — 라운드랩
ROUND LAB is a Korean skincare brand built around the purity of natural water sources — most notably Korean birch sap harvested from untouched birch forests in Gangwon Province. The brand philosophy centres on replacing conventional water in formulas with mineral-rich natural waters to elevate the baseline hydration quality of every product.
ROUND LAB Official Global Store — oliveyoung.com
Direct Brand Partner · Olive Young Global Express Shipping