Which version are you looking at?
There is also a separate UVLock SPF45+ listing on Round Lab's en ca storefront; it is not a verified Korean formula or the US SPF50 label. The range includes a cream, serum, stick and cushion, so the word 'Birch' has been given an unreasonable amount of administrative work.23
| Detail | US UVLock SPF50 | Korean version | Separate en ca UVLock listing |
|---|---|---|---|
| Protection label | SPF50 Broad Spectrum | Check the exact tube | SPF45+, PA++++ |
| UV filters | Avobenzone 2.7%, homosalate 13.5%, octisalate 4.5% | Exact filter list not confirmed | Avobenzone, homosalate and octisalate appear in the ingredient list; percentages are not given |
| Texture | Cream | Not confirmed | Described by Round Lab as a lightweight cream |
| Price | US price not confirmed | Korean price not confirmed | Listed at $37 for 50 ml; do not use this as a US or Korean price comparison |
| Directions | Apply liberally 15 minutes before sun exposure; reapply at least every 2 hours | Follow the exact tube's directions | Apply last in skincare; apply 15 minutes before exposure and reapply at least every 2 hours |
Which should you buy?
Choose the US UVLock SPF50 if you want the formula with the active percentages listed above. If you want to replace a Korean tube you already like, match its full name, SPF marking and ingredient list before ordering. The US product is manufactured by Kolmar Korea, so 'made in Korea' cannot settle which market's formula you have, however convenient that would make shopping.1
Will they feel the same?
A reliable texture comparison with the Korean version is still missing. Round Lab describes the separate SPF45+ cream as moisturizing, easy to blend and suitable for all skin types, including sensitive skin. Keep those descriptions attached to that version rather than using them to predict how the US SPF50 or a Korean tube will wear.2
How to use the US SPF50
- 1Apply liberally and evenly 15 minutes before sun exposure.
- 2Reapply at least every 2 hours.
- 3Use a water resistant sunscreen instead if swimming or sweating.
Do not apply the US SPF50 to damaged or broken skin. Keep it out of your eyes and rinse with water if it gets in them. Stop using it and ask a doctor if a rash occurs. Ask a doctor before use on children under 6 months, and store the sunscreen away from excessive heat and direct sunlight.4
Where this answer comes from
- 1DailyMed - ROUND LAB BIRCH JUICE MOISTURIZING UVLOCK SUNSCREEN SPF50 BROAD SPECTRUM- avobenzone, homosalate, octisalate creamdailymed.nlm.nih.gov
- 2Birch Moisturizing Sunscreen SPF 45+, PA++++roundlab.com
- 3Sun Careroundlab.com
- 4DailyMed - ROUND LAB BIRCH JUICE MOISTURIZING UVLOCK SUNSCREEN SPF50 BROAD SPECTRUM- avobenzone, homosalate, octisalate creamdailymed.nlm.nih.gov
