Is Threonine safe in cosmetics?
Threonine has a safety rating of "EXCELLENT" in our database. EU status: permitted. US status: permitted.
EXCELLENT
Cosmetic Ingredient
Threonine
INCI: THREONINE
Threonine (CAS 72-19-5 (L-threonine)) is a cosmetic cosmetic ingredient functioning as Skin conditioning, hair conditioning, antistatic. EU Regulation 1223/2009 status: permitted. Industrial safety data is also available in the chemical safety database.
View industrial chemical safety profile for CAS 72-19-5 (L-threonine) →
Function
Skin conditioning, hair conditioning, antistatic
Editorial assessment
EXCELLENT
Preliminary editorial note — not a computed safety verdict.
Regulatory Status
EU EU Status
permitted
US US Status
permitted
US Notes
GRAS as food ingredient (21 CFR 172.320); permitted in cosmetics with no restrictions
For full compliance data across multiple jurisdictions, use the Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for Threonine.
Calculate MoS for your specific formulation with the MoS Calculator.
Editorial summary
Preliminary editorial summary for Threonine — not a computed safety verdict. See the sourced toxicological data above.
Frequently Asked Questions
Is Threonine allowed in the EU?
Threonine EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.
What does Threonine do in cosmetics?
Threonine functions as: Skin conditioning, hair conditioning, antistatic. It is classified as a cosmetic ingredient in our database. CAS number: 72-19-5 (L-threonine).
Compliance Tools
Check Threonine compliance across multiple jurisdictions:
Ingredient Decoder
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Substance Compliance
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MoS Calculator
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Heavy Metal Limits
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CI 58000
MODERATE
Chemical family
Colorant
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