Is Dihydroxypropyl Cystine safe in cosmetics?
Dihydroxypropyl Cystine has a safety rating of "GOOD" in our database. EU status: permitted. US status: permitted.
Good
Cosmetic Ingredient
Dihydroxypropyl Cystine
INCI: DIHYDROXYPROPYL CYSTINE
Dihydroxypropyl Cystine (CAS Not widely assigned in public databases (CosIng-listed INCI)) is a cosmetic cosmetic ingredient functioning as Hair conditioning, keratin repair agent (cystine-glycerol adduct for disulfide. EU Regulation 1223/2009 status: permitted. Industrial safety data is also available in the chemical safety database.
Auto-generated CPSR Part A draft with source citations
CAS Number
Not widely assigned in public databases (CosIng-listed INCI)
View industrial chemical safety profile →
Function
Hair conditioning, keratin repair agent (cystine-glycerol adduct for disulfide bond mimicry)
Safety Rating
GOOD
Regulatory Status
EU EU Status
permitted
US US Status
permitted
US Notes
Permitted — no CFR restriction
For full compliance data across multiple jurisdictions, use the Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for Dihydroxypropyl Cystine.
Calculate MoS for your specific formulation with the MoS Calculator.
Expert Verdict
Expert safety assessment and concern-level summary for Dihydroxypropyl Cystine.
Frequently Asked Questions
Is Dihydroxypropyl Cystine allowed in the EU?
Dihydroxypropyl Cystine EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.
What does Dihydroxypropyl Cystine do in cosmetics?
Dihydroxypropyl Cystine functions as: Hair conditioning, keratin repair agent (cystine-glycerol adduct for disulfide bond mimicry). It is classified as a cosmetic ingredient in our database. CAS number: Not widely assigned in public databases (CosIng-listed INCI).
Compliance Tools
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Substance Compliance
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MoS Calculator
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Heavy Metal Limits
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