SunscreensROUND LAB
Birch Mild-Up Sunscreen UVLock SPF 50 Broad Spectrum
The US-listed 50 mL version is a mineral sunscreen lotion labeled SPF 50 Broad Spectrum. Apply a generous, even layer as the final skincare step; follow its label for reapplication.
50 mL / 1.69 fl ozBrand information
Product information at a glance
| Product type | Mineral lotion |
|---|---|
| Size | 50 mL / 1.69 fl oz |
| Selected ingredients | ZINC OXIDE · SODIUM HYALURONATE · HYALURONIC ACID · GLYCERIN |
| Product information | Round Lab English storefront (online listing) |
Based on brand information and published sources, not a hands-on review.
01 / TEXTURE
Mineral sunscreen lotion format
Brand description
The official page presents this as a mineral sunscreen lotion.
02 / INGREDIENTS
Ingredient information for this version
This page does not reproduce a complete ingredient list for this version. Check the linked official ingredient panel and the exact product or shade on your package; a formula comparison is unavailable here.
| Ingredient | Common role or formula detail |
|---|---|
| ZINC OXIDE | A mineral UV filter used in sunscreen formulas. |
| SODIUM HYALURONATE | A hyaluronic-acid salt used as a humectant. |
| HYALURONIC ACID | A humectant that binds water. |
| GLYCERIN | A humectant that attracts water to the outer skin layers. |
03 / YOUR ROUTINE
Official directions and routine order
Official directions
Apply liberally and evenly 15 minutes before sun exposure. Reapply at least every 2 hours. Use a water-resistant sunscreen if swimming or sweating. The US label also says to keep the product out of the eyes and rinse with water if contact occurs.
Official directions checked 2026-11-04 ↗Check the exact product label, shade or variant where relevant, and the current seller terms before buying.
What the U.S. 50 mL carton lists
The U.S. carton filed under NDC 84616-002-01 reads SPF 50+ Broad Spectrum and lists zinc oxide 17% in Drug Facts. The DailyMed record title and the brand’s shop heading say SPF 50.
The carton’s inactive ingredients differ from the brand’s online list. For example, the carton includes propylheptyl caprylate and lotus leaf extract. Match the carton and Drug Facts to the tube you receive.
Official product reference ↗04 / THE NEXT STEP
Where to buy and which product details to check
Check the size, full ingredient list, price, stock and delivery to your address on the seller’s page.
SIDE BY SIDE
Compare other products in the same category
Sunscreens
SunscreensHyalu-Cica Water-Fit Sun Serum UV
A serum-like sunscreen with SPF50 broad-spectrum protection.
Explore the product
SunscreensBirch Moisturizing Sunscreen UVLOCK SPF45+ PA++++
A moisturizing sunscreen with SPF45+ PA++++.
Explore the productSources & product information
Sources checked: 2026-10-14 · Product-page details checked 2026-11-04
Product details follow the linked global / US sources. Check the label sold in your country for ingredients and directions.
Our research and advertising policyYOUR NEXT STEP
Still choosing, or already using it?
ROUND LAB · Birch Mild-Up Sunscreen UVLock SPF 50 Broad Spectrum · 50 mL / 1.69 fl oz
US / global product information
Still deciding?
Keep this product selected while you compare another option. Read the listed differences before checking the seller’s current terms.
Compare this product →Already using this product?
Return to its directions, or keep your own notes about the amount, other products used and what you notice.
Read directions and precautions →Working out your morning or evening order?
Arrange the skincare products you have saved in My routine. Opening the tool does not add a product or change your order.
Your notes and saved routine stay in this browser. They are private records, not public reviews or a test of a product’s effects.
Products with overlapping ingredient lists
Calculations use complete ingredient lists for the stated market and product version. Listed names do not establish concentrations, equivalent effects or allergy suitability.
Overlapping-list comparisons need a complete, readable ingredient list for this product version.