4 ingredients with Korea limits or conditions.
Salicylic Acid, Tocopherol, Urea, Cysteine6 ingredients with EU limits or conditions.
Salicylic Acid, Limonene, Linalool, Benzyl Salicylate, Coumarin, HydroxycitronellalNo prohibited or restricted ingredients found in U.S. records.
“—” 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)
This formula lists ingredients that are known to break down faster in heat, light or air:
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 |
| AS ASEAN (10 countries) | None found | Lactic Acid, Salicylic Acid |
| JP Japan | None found | Panthenol, Salicylic Acid, Tocopheryl Acetate |
| TW Taiwan | None found | Citric Acid, Cysteine, Lactic Acid, Salicylic Acid, Urea |
| CA Canada | None found | Citric Acid, Glycerin, Lactic Acid, Salicylic Acid, Urea |
| BR Brazil | None found | Citric Acid, Salicylic Acid |
| AR Argentina | None found | Citric Acid, Salicylic Acid |
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. 6 ingredients have limits or conditions in the EU's CosIng records (Salicylic Acid, Limonene, Linalool, Benzyl Salicylate, Coumarin, Hydroxycitronellal). 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 (Salicylic Acid, Tocopherol, 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: SUCROSE, GLYCERIN, HYDRATED SILICA, POLYSORBATE 20, HYDROGENATED POLY(C6-14 OLEFIN). In total 59 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.