Serum
No 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 It's Skin official store, retrieved Oct 17, 2026. Formulas change — check the label on the package you buy.
“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 | Salicylic Acid |
| JP Japan | None found | Dipotassium Glycyrrhizate, Panthenol, Salicylic Acid |
| TW Taiwan | None found | 3-O-Ethyl Ascorbic Acid, Citric Acid, Magnesium Ascorbyl Phosphate, Salicylic Acid |
| CA Canada | None found | Citric Acid, Glycerin, Salicylic Acid, Sodium Citrate |
| 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.