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KBeauty Verified™ — K-beauty checked against official records from Korea, the EU and the U.S.
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Round Lab Birch Mild-Up Sunscreen UVLock SPF 50 Broad Spectrum

Sunscreen · SPF 50

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Check against official records

KR South Korea (MFDS)

2 ingredients with Korea limits or conditions.

Pinus Sylvestris Leaf Oil, Tocopherol
EU European Union (CosIng)

1 ingredient with EU limits or conditions.

Pinus Sylvestris Leaf Oil
US United States (FDA)

No prohibited or restricted ingredients found in U.S. records.

#Ingredient (as listed)KR KoreaEU EUUS U.S.
1 WATER ———
2 ZINC OXIDE Approved UV filter · 25% Approved colorant Approved UV filter · - 25% - Approved UV filter · 25%
3 ISODODECANE ———
4 CAPRYLYL METHICONE ———
5 POLYGLYCERY-3 POLYDIMETHYLSILFOXYETHYL DIMETHICONE ———
6 METHYL TRIMETHICONE ———
7 DISTEARDIMONIUM HECTORITE ———
8 SODIUM HYALURONATE ———
9 HYALURONIC ACID ———
10 BETULA PLATYPHYLLA JAPONICA JUICE ———
11 ARTEMISIA ANNUA EXTRACT ———
12 METHYL METHACRYLATE CROSSPOLYMER ———
13 GLYCERIN ———
14 BUTYLENE GLYCOL ———
15 PROPANEDIOL ———
16 GLYCERYL GLUCOSIDE ———
17 MAGNESIUM SULFATE ———
18 TRIETHOXYCAPRYLYLSILANE ———
19 ANTHEMIS NOBILIS FLOWER OIL ———
20 PINUS SYLVESTRIS LEAF OIL Restricted Restricted —
21 SACCHAROMYCES FERMENT FILTRATE ———
22 ETHYLHEXYLGLYCERIN ———
23 CAPRYLYL GLYCOL ———
24 GLYCERYL CAPRYLATE ———
25 BUTYLOCTYL SALICYLATE ———
26 POLYMETHYLSILSESQUIOXANE ———
27 CYCLOHEXASILOXANE ———
28 1,2-HEXANEDIOL ———
29 LAURYL POLYGLYCERYL-3 POLYDIMETHYILSOXYETHYL DIMETHICONE ———
30 CRYPTOMERIA JAPONICA LEAF EXTRACT ———
31 TOCOPHEROL (VITAMIN E) Restricted · 20% ——
32 ASCORBIC ACID (VITAMIN C) ———

“—” means no specific record for that ingredient in that jurisdiction's lists — it is not an approval. Restricted ingredients are allowed within limits (concentration, product type, label warnings); a product listing one is not necessarily over the limit. How we check.

Ingredient list from Round Lab official store, retrieved Oct 17, 2026. Formulas change — check the label on the package you buy.

Can I take it to Hawaii? — reef sunscreen laws

Checked against this formula's UV filters (Zinc Oxide). These laws cover sunscreens sold — and in some places used — without a prescription.

PlaceResultWhyLaw · since
State of Hawaii OK None of the banned filters HRS §342D-21 (Act 104, 2018) · 2021-01-01
Maui County, HI OK Mineral filters only Maui County Code ch. 20.42 (Ord. 5306) · 2022-10-01
Hawaiʻi County (Big Island), HI OK Mineral filters only Hawaiʻi County Code §14-31 (Ord. 22-81) · 2022-12-01
U.S. Virgin Islands OK None of the banned filters 27 V.I.C. §305h (Act 8185) · 2020-03-30
Key West, FLNot enforcedThe 2019 ban on oxybenzone/octinoxate was preempted by Florida law (Fla. Stat. §499.002(7), 2020).Ord. 19-03

Hawaii state and U.S. Virgin Islands laws exclude products sold as face cosmetics without a sunscreen claim; SPF products are sunscreens. Information only — check the latest rules before you travel.

Fragrance allergens (EU labelling)

None of the fragrance allergens the EU requires to be labelled appear in this ingredient list.

Source: EU Cosmetics Regulation Annex III as amended by Regulation (EU) 2023/1545 — the list grew from 26 to over 80 entries; it applies to new products from 31 July 2026 and to all products from 31 July 2028. Shown for information; it is not a sign that a product is unsafe.

Storage & heat

Official storage statements

“Protect the product in this container from excessive heat and direct sun.” — Required 'Other information' statement for sunscreens sold in the U.S. (FDA OTC Monograph M020)

“Keep out of direct sunlight. Keep out of reach of children.” — Common precautions required on all cosmetics in Korea (Cosmetics Act Enforcement Rule, Annex 3)

Our note — heat, light & air

This formula lists ingredients that are known to break down faster in heat, light or air:

Don't leave sunscreen in a hot car or in direct sun on the beach — heat can separate the formula and lower protection.

Other markets

Ingredients in this formula that are prohibited or limited in other markets, from the overseas regulation database compiled by Korea's MFDS. Limited means allowed within conditions.

MarketProhibitedLimited
CN China None found Zinc Oxide
AS ASEAN (10 countries) None found Zinc Oxide
JP Japan None found —
TW Taiwan None found Zinc Oxide
CA Canada None found Glycerin, Zinc Oxide
BR Brazil None found Zinc Oxide
AR Argentina None found Zinc Oxide

Similar ingredient lists

Products from other brands whose ingredient lists overlap most with this one. The score weighs the first ingredients most (labels list them roughly by amount), skips ingredients found in most products, and counts UV filters and less common ingredients more. Similar ingredient lists (not a test of how they work) — amounts, texture and results can differ.

Cos De BAHA MS Hydrating Mineral Sunscreen 1.5 OZ (45ml ) Sunscreen
70% similar · Shares 12 of this product's first 20 ingredients, including Zinc Oxide, Polyglyceryl-3 Polydimethylsiloxyethyl Dimethicone and Caprylyl Methicone.
Compare side by side →
0 1 0 0 0 0 0 2
Isntree Hyaluronic Acid Natural Sun Cream 50ml Sunscreen · $21.96
70% similar · Shares 11 of this product's first 20 ingredients, including Zinc Oxide, Polyglyceryl-3 Polydimethylsiloxyethyl Dimethicone and Caprylyl Methicone.
Compare side by side →
0 0 0 0 0 0 0 0
Innisfree Daily UV Defense Mineral Sunscreen Broad Spectrum SPF 45 with Color Correcting Sunscreen · SPF 45 · $12.00
67% similar · Shares 11 of this product's first 20 ingredients, including Zinc Oxide, Polyglyceryl-3 Polydimethylsiloxyethyl Dimethicone and Caprylyl Methicone.
Compare side by side →
0 0 0 0 0 0 0 0
Espoir Water Splash Sun Cream Tone-up Lasting 50ml Sunscreen · $15.00
67% similar · Shares 12 of this product's first 20 ingredients, including Zinc Oxide, Polyglyceryl-3 Polydimethylsiloxyethyl Dimethicone and Caprylyl Methicone.
Compare side by side →
0 0 0 0 0 0 0 0
Goongbe Kids Sun Lotion SPF 40 & Cooling Gel Cream, 2.82oz & 3.38oz Sunscreen · SPF 40 · $37.00
61% similar · Shares 10 of this product's first 20 ingredients, including Zinc Oxide, Polyglyceryl-3 Polydimethylsiloxyethyl Dimethicone and Hyaluronic Acid.
Compare side by side →
0 0 0 0 0 0 0 0
Skin&Lab Porebarrier Tinted Sunscreen Sunscreen
61% similar · Shares 8 of this product's first 20 ingredients, including Zinc Oxide, Polyglyceryl-3 Polydimethylsiloxyethyl Dimethicone and Caprylyl Methicone.
Compare side by side →
0 1 0 0 0 0 0 1

Based on the listed ingredients only; recalculated weekly. Not a judgment of which product is better, safer or the same.

Compare with

Round Lab vs Round LabBirch Mild-Up Sunscreen UVLock SPF 50 Broad Spectrum vs 1025 Dokdo AmpouleRound Lab vs Round LabBirch Mild-Up Sunscreen UVLock SPF 50 Broad Spectrum vs 1025 Dokdo Cleansing OilRound Lab vs Round LabBirch Mild-Up Sunscreen UVLock SPF 50 Broad Spectrum vs 1025 Dokdo CreamRound Lab vs Round LabBirch Mild-Up Sunscreen UVLock SPF 50 Broad Spectrum vs 1025 Dokdo LotionRound Lab vs Round LabBirch Mild-Up Sunscreen UVLock SPF 50 Broad Spectrum vs 1025 Dokdo Mud PackRound Lab vs Round LabBirch Mild-Up Sunscreen UVLock SPF 50 Broad Spectrum vs 1025 Dokdo Toner

Information only, not medical advice. If you are pregnant, have a skin condition or allergies, ask a dermatologist or pharmacist before use.

Frequently asked questions

Is Round Lab Birch Mild-Up Sunscreen UVLock SPF 50 Broad Spectrum allowed in the European Union?

We found no prohibited ingredients. 1 ingredient has limits or conditions in the EU's CosIng records (Pinus Sylvestris Leaf Oil). That usually means a maximum amount, a product type or a label warning — not a ban.

Is Round Lab Birch Mild-Up Sunscreen UVLock SPF 50 Broad Spectrum allowed in South Korea?

We found no prohibited ingredients. 2 ingredients have limits or conditions in Korea's MFDS records (Pinus Sylvestris Leaf Oil, Tocopherol). That usually means a maximum amount, a product type or a label warning — not a ban.

Is Round Lab Birch Mild-Up Sunscreen UVLock SPF 50 Broad Spectrum allowed in the United States?

We found no prohibited or restricted ingredients in the FDA's records for its listed ingredients. This is a records check, not an approval.

Can Round Lab Birch Mild-Up Sunscreen UVLock SPF 50 Broad Spectrum be sold as a sunscreen in the U.S.?

Every UV filter we matched in its list is on the FDA's list of sunscreen actives. That is a statement about the filters, not an FDA approval of this product.

Does Round Lab Birch Mild-Up Sunscreen UVLock SPF 50 Broad Spectrum contain fragrance allergens?

None of the fragrance allergens the EU requires to be labelled appear in its ingredient list.

What are the main ingredients in Round Lab Birch Mild-Up Sunscreen UVLock SPF 50 Broad Spectrum?

Ingredient lists are in descending order of amount down to about 1%. The first five listed are: WATER, ZINC OXIDE, ISODODECANE, CAPRYLYL METHICONE, POLYGLYCERY-3 POLYDIMETHYLSILFOXYETHYL DIMETHICONE. In total 32 ingredients are listed.

Where does this ingredient list come from?

From Round Lab official store on October 17, 2026. We re-read it every week and keep earlier versions if the formula changes.

Ask KBeauty Verified™
KBeauty Verified™ — K-beauty checked against official records from Korea, the EU and the U.S.
Reading time:
Views: 0
Claude: 1 ChatGPT: 0 Google · Gemini: 0 Perplexity: 0 Meta AI: 0 Amazon: 0 Others: 0
Read by AI & crawlers
Claude1
ChatGPT0
Google · Gemini0
Perplexity0
Meta AI0
Amazon0
Others0

Named by what the crawler says it is; look-alikes we detect are counted under Others. Google · Gemini includes Googlebot, Google’s search crawler, whose index Google also uses for its AI features; other search engines and bots are in Others. AI visibility →