Korean: 스타이렌 · CAS 100-42-5 · Functions: solvent
No specific rule on file.
Prohibited Annex II/1575
Source: EU CosIng — Annex II · checked Oct 16, 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 · From 2027-07-01 · intentionally added
Source: Vermont — Act 131 of 2024 (S.25) — Chemicals in Cosmetic and Menstrual Products · checked Oct 16, 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) · From 2027-01-01 · intentionally added
Source: California — Toxic-Free Cosmetics Act (AB 2762, Ch. 314, Stats. 2020), as amended by AB 496 ( · checked Oct 16, 2026
How Styrene is treated in 1 more market, 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 |
|---|---|---|
| AS ASEAN (10 countries) | Prohibited | — |
Source: MFDS cosmetic ingredient use restrictions — overseas regulations · checked Oct 16, 2026
STYRENE 스타이렌
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.
In the EU's CosIng records it is listed as “Prohibited” (EU CosIng — Annex II).
We found no specific rule for it in Korea's MFDS records. That is not an approval or a safety statement.
In the FDA's records it is listed as “Banned in some U.S. states” (Vermont — Act 131 of 2024 (S.25) — Chemicals in Cosmetic and Menstrual Products).
The EU's CosIng inventory lists its functions as: solvent.
Korea's MFDS standard Korean name is 스타이렌.
CAS 100-42-5 (from official records).