DIMETHYLOL ETHYLENE THIOUREA

RestrictedCAS 15534-95-916 regulations across 15 markets

DIMETHYLOL ETHYLENE THIOUREA is a cosmetic ingredient classified as Antimicrobial. Also known as CAS 15534-95-9. It is regulated in 15 markets including UAE, Bahrain, European Union.

Also Known As

CAS Number
15534-95-9

Market Overview — 29 Markets

European Union1
United Kingdom2
United States
California
Maryland
Washington
Canada
Brazil
South Korea1
Japan
Taiwan
Australia
Singapore1
Malaysia1
Thailand1
Indonesia1
Vietnam1
Philippines1
UAE1
Saudi Arabia1
Qatar1
Oman1
Kuwait1
Bahrain1
Russia
Belarus
Kazakhstan
Armenia
Kyrgyzstan

Detailed Regulations

Europe3 regulations
European UnionRestrictedAnnex III #44
Chemical name
1,3-Bis(hydroxymethyl)imidazolidine-2-thione
CAS
15534-95-9
Max concentration
(a) 2% (b) 2%
Product type
(a) Hair products (b) Nail products
Conditions of use
Contains Dimethylol ethylene thiourea
Other conditions
(a) Not to be used in aerosol dispensers (sprays) (b) pH < 4

Source: EC 1223/2009 Annex III

United KingdomRestrictedAnnex III #44
Chemical name
1,3-Bis (hydroxymethyl)imidazolidine-2-thione
CAS
15534-95-9
Max concentration
(a)2 %
Product type
(a)Hair- products
Conditions of use
Max: (a)2 % Contains Dimethylol ethylene thiourea
Other conditions
(a)Not to be used in aerosol dispensers (sprays)

Source: UK retained EC 1223/2009 Annex III

United KingdomRestrictedAnnex III #44
Chemical name
1,3-Bis (hydroxymethyl)imidazolidine-2-thione
CAS
15534-95-9
Max concentration
(b)2 %
Product type
(b)Nail- products
Conditions of use
Max: (b)2 % Contains Dimethylol ethylene thiourea
Other conditions
(b)pH < 4

Source: UK retained EC 1223/2009 Annex III

AmericasNo restrictions

No specific restrictions for DIMETHYLOL ETHYLENE THIOUREA in United States, California, Maryland, Washington, Canada, Brazil.

East Asia & Oceania1 regulation
South KoreaRestrictedAnnex restricted #M1380
Chemical name
Dimethylol Ethylene Thiourea
Conditions of use
* 배합한도 : 두발용 제품류 및 손발톱용 제품류에 2% (다만, 에어로졸(스프레이에 한함) 제품에는 사용금지) 기타 제품에는 사용금지

Source: MFDS Korea Cosmetics Regulation

ASEAN6 regulations
SingaporeRestrictedAnnex ACD Annex III (Restricted) #44
Chemical name
1, 3-Bis (hydroxymethyl) imidazolidine-2-thione / Dimethylol ethylene thiourea
CAS
15534-95-9
Max concentration
(a) 2% (b) 2%
Product type
(a) Hair care products (b) Nail care products
Conditions of use
(a) Prohibited in aerosol dispensers (sprays) (b) The pH of the product as applied must be less than 4 | Label: Contains 1, 3-Bis (hydroxymethyl) imidazolidine-2-hione

Source: ASEAN Cosmetic Directive (HSA Dec 2025)

MalaysiaRestrictedAnnex ACD Annex III (Restricted) #44
Chemical name
1, 3-Bis (hydroxymethyl) imidazolidine-2-thione / Dimethylol ethylene thiourea
CAS
15534-95-9
Max concentration
(a) 2% (b) 2%
Product type
(a) Hair care products (b) Nail care products
Conditions of use
(a) Prohibited in aerosol dispensers (sprays) (b) The pH of the product as applied must be less than 4 | Label: Contains 1, 3-Bis (hydroxymethyl) imidazolidine-2-hione

Source: ASEAN Cosmetic Directive (HSA Dec 2025)

ThailandRestrictedAnnex ACD Annex III (Restricted) #44
Chemical name
1, 3-Bis (hydroxymethyl) imidazolidine-2-thione / Dimethylol ethylene thiourea
CAS
15534-95-9
Max concentration
(a) 2% (b) 2%
Product type
(a) Hair care products (b) Nail care products
Conditions of use
(a) Prohibited in aerosol dispensers (sprays) (b) The pH of the product as applied must be less than 4 | Label: Contains 1, 3-Bis (hydroxymethyl) imidazolidine-2-hione

Source: ASEAN Cosmetic Directive (HSA Dec 2025)

IndonesiaRestrictedAnnex ACD Annex III (Restricted) #44
Chemical name
1, 3-Bis (hydroxymethyl) imidazolidine-2-thione / Dimethylol ethylene thiourea
CAS
15534-95-9
Max concentration
(a) 2% (b) 2%
Product type
(a) Hair care products (b) Nail care products
Conditions of use
(a) Prohibited in aerosol dispensers (sprays) (b) The pH of the product as applied must be less than 4 | Label: Contains 1, 3-Bis (hydroxymethyl) imidazolidine-2-hione

Source: ASEAN Cosmetic Directive (HSA Dec 2025)

VietnamRestrictedAnnex ACD Annex III (Restricted) #44
Chemical name
1, 3-Bis (hydroxymethyl) imidazolidine-2-thione / Dimethylol ethylene thiourea
CAS
15534-95-9
Max concentration
(a) 2% (b) 2%
Product type
(a) Hair care products (b) Nail care products
Conditions of use
(a) Prohibited in aerosol dispensers (sprays) (b) The pH of the product as applied must be less than 4 | Label: Contains 1, 3-Bis (hydroxymethyl) imidazolidine-2-hione

Source: ASEAN Cosmetic Directive (HSA Dec 2025)

PhilippinesRestrictedAnnex ACD Annex III (Restricted) #44
Chemical name
1, 3-Bis (hydroxymethyl) imidazolidine-2-thione / Dimethylol ethylene thiourea
CAS
15534-95-9
Max concentration
(a) 2% (b) 2%
Product type
(a) Hair care products (b) Nail care products
Conditions of use
(a) Prohibited in aerosol dispensers (sprays) (b) The pH of the product as applied must be less than 4 | Label: Contains 1, 3-Bis (hydroxymethyl) imidazolidine-2-hione

Source: ASEAN Cosmetic Directive (HSA Dec 2025)

GCC6 regulations
UAERestrictedAnnex III #44
Chemical name
1,3-Bis(hydroxymethyl)imidazolidine-2-thione
CAS
15534-95-9
Max concentration
(a) 2% (b) 2%
Product type
(a) Hair products (b) Nail products
Conditions of use
Contains Dimethylol ethylene thiourea
Other conditions
(a) Not to be used in aerosol dispensers (sprays) (b) pH < 4

Source: GSO 1943:2024 (based on EU 1223/2009 III)

Saudi ArabiaRestrictedAnnex III #44
Chemical name
1,3-Bis(hydroxymethyl)imidazolidine-2-thione
CAS
15534-95-9
Max concentration
(a) 2% (b) 2%
Product type
(a) Hair products (b) Nail products
Conditions of use
Contains Dimethylol ethylene thiourea
Other conditions
(a) Not to be used in aerosol dispensers (sprays) (b) pH < 4

Source: GSO 1943:2024 (based on EU 1223/2009 III)

QatarRestrictedAnnex III #44
Chemical name
1,3-Bis(hydroxymethyl)imidazolidine-2-thione
CAS
15534-95-9
Max concentration
(a) 2% (b) 2%
Product type
(a) Hair products (b) Nail products
Conditions of use
Contains Dimethylol ethylene thiourea
Other conditions
(a) Not to be used in aerosol dispensers (sprays) (b) pH < 4

Source: GSO 1943:2024 (based on EU 1223/2009 III)

OmanRestrictedAnnex III #44
Chemical name
1,3-Bis(hydroxymethyl)imidazolidine-2-thione
CAS
15534-95-9
Max concentration
(a) 2% (b) 2%
Product type
(a) Hair products (b) Nail products
Conditions of use
Contains Dimethylol ethylene thiourea
Other conditions
(a) Not to be used in aerosol dispensers (sprays) (b) pH < 4

Source: GSO 1943:2024 (based on EU 1223/2009 III)

KuwaitRestrictedAnnex III #44
Chemical name
1,3-Bis(hydroxymethyl)imidazolidine-2-thione
CAS
15534-95-9
Max concentration
(a) 2% (b) 2%
Product type
(a) Hair products (b) Nail products
Conditions of use
Contains Dimethylol ethylene thiourea
Other conditions
(a) Not to be used in aerosol dispensers (sprays) (b) pH < 4

Source: GSO 1943:2024 (based on EU 1223/2009 III)

BahrainRestrictedAnnex III #44
Chemical name
1,3-Bis(hydroxymethyl)imidazolidine-2-thione
CAS
15534-95-9
Max concentration
(a) 2% (b) 2%
Product type
(a) Hair products (b) Nail products
Conditions of use
Contains Dimethylol ethylene thiourea
Other conditions
(a) Not to be used in aerosol dispensers (sprays) (b) pH < 4

Source: GSO 1943:2024 (based on EU 1223/2009 III)

EAEUNo restrictions

No specific restrictions for DIMETHYLOL ETHYLENE THIOUREA in Russia, Belarus, Kazakhstan, Armenia, Kyrgyzstan.

Frequently Asked Questions

Is DIMETHYLOL ETHYLENE THIOUREA banned in any country?

DIMETHYLOL ETHYLENE THIOUREA is not banned in any of the 26 markets tracked by Formpli. However, it may be subject to restrictions or conditions of use in some markets.

What are the restrictions on DIMETHYLOL ETHYLENE THIOUREA in cosmetics?

DIMETHYLOL ETHYLENE THIOUREA is restricted or has conditions of use in UAE, Bahrain, European Union, Indonesia, South Korea, Kuwait, Malaysia, Oman, Philippines, Qatar, Saudi Arabia, Singapore, Thailand, United Kingdom, Vietnam. Restrictions may include maximum concentration limits, product type limitations, or mandatory labeling requirements. See the detailed regulations above for specifics.

Can I use DIMETHYLOL ETHYLENE THIOUREA in cosmetics?

DIMETHYLOL ETHYLENE THIOUREA is regulated in 15 markets. It has restrictions in UAE, Bahrain, European Union, Indonesia, South Korea, Kuwait, Malaysia, Oman, Philippines, Qatar, Saudi Arabia, Singapore, Thailand, United Kingdom, Vietnam. Use Formpli's free screening tool to check your full ingredient list against all 26 markets at once.

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This information is for reference only and does not constitute legal or regulatory advice. Regulations change — always verify with official sources and consult a regulatory specialist before exporting cosmetic products. Data sourced from EU COSING, US FDA, Health Canada, MHLW Japan, MFDS Korea, ASEAN ACD, GCC SFDA, TGA Australia, ANVISA Brazil, EAEU TR CU, and Taiwan TFDA.