Is Dimethylol Ethylene Thiourea safe in cosmetics?
Dimethylol Ethylene Thiourea has a safety rating of "MODERATE" in our database. EU status: prohibited. US status: restricted.
MODERATE
Cosmetic Ingredient
Dimethylol Ethylene Thiourea
Also known as: 1,3-Bis(hydroxymethyl)imidazolidin-2-thione, BRN 0638446, Dimethylolethylenethiourea, EINECS 239-579-1
INCI: DIMETHYLOL ETHYLENE THIOUREA
Dimethylol Ethylene Thiourea (CAS 15534-95-9) is a cosmetic cosmetic ingredient functioning as Antimicrobial preservative, hair conditioning. EU Regulation 1223/2009 status: prohibited. Industrial safety data is also available in the chemical safety database.
View industrial chemical safety profile for CAS 15534-95-9 →
Function
Antimicrobial preservative, hair conditioning
Editorial assessment
MODERATE
Preliminary editorial note — not a computed safety verdict.
Chemistry & Identifiers
IUPAC Name
1,3-bis(hydroxymethyl)imidazolidine-2-thione
InChIKey
QXYJLKUVMPXXKA-UHFFFAOYSA-N
Regulatory Status
EU EU Status
prohibited
US US Status
restricted
US Notes
Permitted under current CFR; however, formaldehyde-releaser classification may subject it to upcoming FDA/state-level bans (Washington State already banned formaldehyde releasers).
For full compliance data across multiple jurisdictions, use the Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for Dimethylol Ethylene Thiourea.
Calculate MoS for your specific formulation with the MoS Calculator.
Expanded Jurisdictional Detail
Additional regulatory detail beyond the 7-jurisdiction summary: Saudi SFDA, Korea MFDS, ASEAN ACD, Japan/Korea, Brazil/India, and cross-jurisdictional restriction entries.
SA Saudi SFDA (III - Restricted)
Product type: (a) Hair products (b) Nail products. Max: (a) 2% (b) 2%.
BRIN Brazil/India Cosmetics
India: Restricted · max (a) 2% (b) 2%
Function Categories & List Membership
Cosmetic/Chemical Function Categories
Biocide
Softener and conditioner
Regulatory List Membership (1)
EU CosIng Cosmetics Ingredient Database
Editorial summary
Preliminary editorial summary for Dimethylol Ethylene Thiourea — not a computed safety verdict. See the sourced toxicological data above.
Regulatory Flags
preservative
eu_cosing_listed
Known Synonyms
1,3-Bis(hydroxymethyl)imidazolidin-2-thione
BRN 0638446
Dimethylolethylenethiourea
EINECS 239-579-1
Chemical Function
Biocide
Softener and conditioner
Regulatory Lists
Europe; Personal care; restricted
Australian Status
AICIS status: listed
Frequently Asked Questions
Is Dimethylol Ethylene Thiourea allowed in the EU?
Dimethylol Ethylene Thiourea EU regulatory status: prohibited. This is based on EU Regulation 1223/2009 and its amendments.
What does Dimethylol Ethylene Thiourea do in cosmetics?
Dimethylol Ethylene Thiourea functions as: Antimicrobial preservative, hair conditioning. It is classified as a cosmetic ingredient in our database. CAS number: 15534-95-9.
Compliance Tools
Check Dimethylol Ethylene Thiourea compliance across multiple jurisdictions:
Ingredient Decoder
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82 Allergen Checker
Check for EU declarable fragrance allergens
Substance Compliance
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MoS Calculator
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Heavy Metal Limits
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