Korean: 아이소부틸파라벤 · Functions: antimicrobial
Restricted MFDS restricted ingredients
Conditions (official MFDS text, Korean):
* 배합한도 : ∙ 단일성분일 경우 0.4%(산으로서)
∙ 혼합사용의 경우 0.8%(산으로서)
Source: MFDS — cosmetic ingredient use restrictions · checked Oct 17, 2026
No specific rule on file.
Banned in some U.S. states MD-HB643
Conditions: Maryland: Public Health - Cosmetic Products - Ingredient Prohibition (HB 643, Chapter 490, Laws of Maryland 2021) · Md. Code, Health-General §21-259.2 · In force since 2025-01-01 · intentionally added (knowingly)
Source: Maryland — Public Health - Cosmetic Products - Ingredient Prohibition (HB 643, Chapter 490, · checked Oct 17, 2026
Banned in some U.S. states VT-ACT131
Conditions: Vermont: Act 131 of 2024 (S.25) — Chemicals in Cosmetic and Menstrual Products · 9 V.S.A. §2494b · In force since 2026-01-01 · intentionally added
Source: Vermont — Act 131 of 2024 (S.25) — Chemicals in Cosmetic and Menstrual Products · checked Oct 17, 2026
Banned in some U.S. states VA-HB122
Conditions: Virginia: Toxin-Free Cosmetics (HB 122, 2026 Acts ch. 910) · Va. Code §59.1-574.2 · In force since 2026-07-01 · intentionally added
Source: Virginia — Toxin-Free Cosmetics (HB 122, 2026 Acts ch. 910) · checked Oct 17, 2026
Banned in some U.S. states CA-TFCA
Conditions: California: Toxic-Free Cosmetics Act (AB 2762, Ch. 314, Stats. 2020), as amended by AB 496 (Ch. 441, Stats. 2023), AB 60 'Musk Reduction Act' (Ch. 432, Stats. 2025) and SB 39 (Ch. 208, Stats. 2025) · Cal. Health & Safety Code §108980 (subd. (a) 2025 list; (b) 2027 list; (c) musk ketone; (d) trace exemption; (f) boric acid suppositories) · In force since 2025-01-01 · intentionally added
Source: California — Toxic-Free Cosmetics Act (AB 2762, Ch. 314, Stats. 2020), as amended by AB 496 ( · checked Oct 17, 2026
Banned in some U.S. states IL-PA104-0545
Conditions: Illinois: Chemicals in Cosmetic Products Act (HB 3409, Public Act 104-0545) · Public Act 104-0545 §15 · From 2028-07-01 · intentionally added
Source: Illinois — Chemicals in Cosmetic Products Act (HB 3409, Public Act 104-0545) · checked Oct 17, 2026
How Isobutylparaben is treated in 5 more markets, from the overseas cosmetic regulation database compiled by Korea's MFDS. Always confirm with the regulator of that country before selling there.
| Market | Status | Conditions |
|---|---|---|
| CN China | Restricted | — |
| AS ASEAN (10 countries) | Restricted | — |
| JP Japan | Restricted | MFDS summary (Korean): * 【제품 타입 또는 목적 (types or intended purposes of cosmetics)】 : すべての化粧品(모든 화장품) * 【100g당 최대 배합량(Maximum amount of ingredient per 100 g)】 : 1.0 as total(合計量として1.0)(합계량으로 1.0 g) |
| BR Brazil | Restricted | — |
| AR Argentina | Restricted | — |
Source: MFDS cosmetic ingredient use restrictions — overseas regulations · checked Oct 17, 2026
Isobutylparaben 아이소부틸파라벤
Information only, not medical advice. Rules change — always check the linked official source. If you are pregnant, have a skin condition or allergies, ask a dermatologist or pharmacist.
We found no specific rule for it in the EU's CosIng records. That is not an approval or a safety statement.
In Korea's MFDS records it is listed as “Restricted” (MFDS — cosmetic ingredient use restrictions). A restricted ingredient is allowed within the stated conditions.
In the FDA's records it is listed as “Banned in some U.S. states” (Maryland — Public Health - Cosmetic Products - Ingredient Prohibition (HB 643, Chapter 490,).
The EU's CosIng inventory lists its functions as: antimicrobial.
Korea's MFDS standard Korean name is 아이소부틸파라벤.
1 products we checked list it, for example Tonymoly Petit Bunny Gloss Bar Full Collection.