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KBeauty Verified™ — K-beauty checked against official records from Korea, the EU and the U.S.

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N-Ethyl-2-pyrrolidone; 1-ethylpyrrolidin-2-one

Korean: N-에틸-2-피롤리돈; 1-에틸피롤리딘-2-온 · CAS 2687-91-4 ·

KR South Korea (MFDS)

No specific rule on file.

EU European Union (CosIng)

No specific rule on file.

US United States (FDA)

No specific rule on file. The FDA regulates few cosmetic ingredients by name; no rule does not mean approval.

Other markets

How N-Ethyl-2-pyrrolidone; 1-ethylpyrrolidin-2-one 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 17, 2026

Also listed as

N-Ethyl-2-pyrrolidone; 1-ethylpyrrolidin-2-one N-에틸-2-피롤리돈; 1-에틸피롤리딘-2-온

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.

Frequently asked questions

Is N-Ethyl-2-pyrrolidone; 1-ethylpyrrolidin-2-one banned in the European Union?

We found no specific rule for it in the EU's CosIng records. That is not an approval or a safety statement.

Is N-Ethyl-2-pyrrolidone; 1-ethylpyrrolidin-2-one banned in South Korea?

We found no specific rule for it in Korea's MFDS records. That is not an approval or a safety statement.

Is N-Ethyl-2-pyrrolidone; 1-ethylpyrrolidin-2-one allowed in cosmetics in the U.S.?

We found no specific rule for it in the FDA's records. That is not an approval or a safety statement.

What is N-Ethyl-2-pyrrolidone; 1-ethylpyrrolidin-2-one called on Korean labels?

Korea's MFDS standard Korean name is N-에틸-2-피롤리돈; 1-에틸피롤리딘-2-온.

What is the CAS number of N-Ethyl-2-pyrrolidone; 1-ethylpyrrolidin-2-one?

CAS 2687-91-4 (from official records).