4 ingredients with Korea limits or conditions.
Sodium Benzoate, Salicylic Acid, Urea, Cysteine7 ingredients with EU limits or conditions.
Polyquaternium-7, Limonene, Linalool, Benzyl Salicylate, Coumarin, HydroxycitronellalNo prohibited or restricted ingredients found in U.S. records.
| # | Ingredient (as listed) | KR Korea | EU EU | US U.S. |
|---|---|---|---|---|
| 1 | WATER / AQUA / EAU | — | — | — |
| 2 | SODIUM C14-16 OLEFIN SULFONATE | — | — | — |
| 3 | SODIUM COCOYL ALANINATE | — | — | — |
| 4 | DISODIUM COCOAMPHODIACETATE | — | — | — |
| 5 | DIPROPYLENE GLYCOL | — | — | — |
| 6 | COCAMIDE METHYL MEA | — | — | — |
| 7 | FRAGRANCE / PARFUM | — | — | — |
| 8 | CITRIC ACID | — | Approved preservative · 0,2% · 0,0024% | — |
| 9 | SODIUM CHLORIDE | — | — | — |
| 10 | POLYQUATERNIUM-47 | — | — | — |
| 11 | LAURYL GLUCOSIDE | — | — | — |
| 12 | POLYQUATERNIUM-7 | — | Restricted | — |
| 13 | MYRISTYL ALCOHOL | — | — | — |
| 14 | CAPRYLYL GLYCOL | — | — | — |
| 15 | LIMONENE | — | Restricted | — |
| 16 | TETRASODIUM EDTA | — | — | — |
| 17 | LINALOOL | — | Restricted | — |
| 18 | BENZYL SALICYLATE | — | Restricted · (a) 4% · (b) 0,5% · (c)… | — |
| 19 | COUMARIN | — | Restricted | — |
| 20 | HYDROXYCITRONELLAL | — | Restricted · (b) 1,0 % | — |
| 21 | GLUTAMIC ACID | — | — | — |
| 22 | ASPARTIC ACID | — | — | — |
| 23 | ARGININE | — | — | — |
| 24 | SODIUM BENZOATE | Restricted | Approved preservative · a) 2.5% · b) 1.7% · c)… | — |
| 25 | ETHYLHEXYLGLYCERIN | — | — | — |
| 26 | PANTHENOL | — | — | — |
| 27 | BUTYLENE GLYCOL | — | — | — |
| 28 | 1,2-HEXANEDIOL | — | — | — |
| 29 | HYDROXYPROPYL CYCLODEXTRIN | — | — | — |
| 30 | POLYQUATERNIUM-10 | — | — | — |
| 31 | SALICYLIC ACID | Restricted | Restricted · (a) 3.0% · (b) 2.0% ·… Approved preservative · 0,5% · 0,5% | — |
| 32 | DISODIUM EDTA | — | — | — |
| 33 | PCA | — | — | — |
| 34 | LACTIC ACID | — | — | — |
| 35 | GLUCOSE | — | — | — |
| 36 | GLYCINE | — | — | — |
| 37 | UREA | Restricted · 10% | — | — |
| 38 | SODIUM GLYCEROPHOSPHATE | — | — | — |
| 39 | SERINE | — | — | — |
| 40 | POTASSIUM MAGNESIUM ASPARTATE | — | — | — |
| 41 | LEUCINE | — | — | — |
| 42 | ALANINE | — | — | — |
| 43 | CALCIUM GLUCONATE | — | — | — |
| 44 | LYSINE | — | — | — |
| 45 | MAGNESIUM GLUCONATE | — | — | — |
| 46 | ACETYL GLUCOSAMINE | — | — | — |
| 47 | PROLINE | — | — | — |
| 48 | THREONINE | — | — | — |
| 49 | HISTIDINE | — | — | — |
| 50 | PHENYLALANINE | — | — | — |
| 51 | TYROSINE | — | — | — |
| 52 | VALINE | — | — | — |
| 53 | ISOLEUCINE | — | — | — |
| 54 | CREATINE | — | — | — |
| 55 | URIC ACID | — | — | — |
| 56 | CYSTEINE | Restricted | — | — |
| 57 | METHIONINE | — | — | — |
“—” 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 Skin U official store, retrieved Oct 17, 2026. Formulas change — check the label on the package you buy.
This list includes 5 fragrance allergens that the EU requires to be named on the label when present above 0.001% in leave-on or 0.01% in rinse-off products: Limonene, Linalool, Benzyl Salicylate, Coumarin, Hydroxycitronellal.
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.
“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)
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.
| Market | Prohibited | Limited |
|---|---|---|
| CN China | None found | Salicylic Acid, Sodium Benzoate |
| AS ASEAN (10 countries) | None found | Lactic Acid, Polyquaternium-7, Salicylic Acid, Sodium Benzoate |
| JP Japan | None found | Panthenol, Salicylic Acid, Sodium Benzoate |
| TW Taiwan | None found | Citric Acid, Cysteine, Lactic Acid, Salicylic Acid, Sodium Benzoate, Urea |
| CA Canada | None found | Citric Acid, Lactic Acid, Salicylic Acid, Urea |
| BR Brazil | None found | Citric Acid, Polyquaternium-7, Salicylic Acid, Sodium Benzoate |
| AR Argentina | None found | Citric Acid, Polyquaternium-7, Salicylic Acid, Sodium Benzoate |
Information only, not medical advice. If you are pregnant, have a skin condition or allergies, ask a dermatologist or pharmacist before use.
We found no prohibited ingredients. 7 ingredients have limits or conditions in the EU's CosIng records (Polyquaternium-7, Limonene, Linalool, Benzyl Salicylate, Coumarin, Hydroxycitronellal and 1 more). That usually means a maximum amount, a product type or a label warning — not a ban.
We found no prohibited ingredients. 4 ingredients have limits or conditions in Korea's MFDS records (Sodium Benzoate, Salicylic Acid, Urea, Cysteine). That usually means a maximum amount, a product type or a label warning — not a ban.
We found no prohibited or restricted ingredients in the FDA's records for its listed ingredients. This is a records check, not an approval.
Yes — its list includes 5 that the EU requires to be named on labels: Limonene, Linalool, Benzyl Salicylate, Coumarin, Hydroxycitronellal. That is a labelling rule, not a sign the product is unsafe.
Ingredient lists are in descending order of amount down to about 1%. The first five listed are: WATER / AQUA / EAU, SODIUM C14-16 OLEFIN SULFONATE, SODIUM COCOYL ALANINATE, DISODIUM COCOAMPHODIACETATE, DIPROPYLENE GLYCOL. In total 57 ingredients are listed.
From Skin U official store on October 17, 2026. We re-read it every week and keep earlier versions if the formula changes.