How do I check if my formula contains DIHYDROXYPROPYL CYSTINE?

Use the INCI Checker to screen a full ingredient list across selected markets, or use the substance market comparison to review this identity across all supported market datasets.

InventoryRef 9508802/02/2018

DIHYDROXYPROPYL CYSTINE

Dihydroxypropyl Cystine is the organic compound that conforms to the formula: Where R is either H or glycerin.

DIHYDROXYPROPYL CYSTINE is listed in the EU CosIng inventory, but no direct annex records are linked on this page yet.

INCI Checker Compare all markets Search similar

Regulatory evidence by market

No rule for this ingredient has been imported for any of the 13 markets tracked here.

That describes this inventory, not the law. No imported rule is not evidence that an ingredient is permitted: a rule may exist under another name or identifier, or in a dataset not yet imported here.

Markets and their official sources Search every market for this name

Exact external identity check

not_found

No complete-name PubChem match was verified. The material may be a mixture, trade-style INCI identity or be indexed under another identifier; this result must not be read as proof that no related chemistry exists.

Exact CosIng INCI name equals a PubChem synonym · Checked 2026-08-31

Inventory details for DIHYDROXYPROPYL CYSTINE

INCI name

DIHYDROXYPROPYL CYSTINE

Description

Dihydroxypropyl Cystine is the organic compound that conforms to the formula:
Where R is either H or glycerin.

Record provenance

Inventory reference: 95088
Imported identity: DIHYDROXYPROPYL CYSTINE
Source update: 02/02/2018

European Commission CosIng source notes

Annex records for DIHYDROXYPROPYL CYSTINE

Browse

Browse EU annexes

Explore Annex II–VI to see which substances are prohibited, restricted or permitted under specific conditions.

Search annex entries

Search the annex database for entries matching DIHYDROXYPROPYL CYSTINE or related substances.

Key data

CAS

—

The CosIng inventory records no CAS number for this ingredient. That is the absence of an identifier in the source, not a finding about the substance.

—

Restriction

—

Function

HAIR CONDITIONING: Enhancing the appearance and feel of hair. Leaving the hair easy to comb, supple, soft and shiny and/or imparting volume, lightness, gloss, texture, etc.
HUMECTANT: Retaining and/or preserving the moisture in a product during use.
SKIN CONDITIONING: Maintaining the skin in good condition.

Official EU ingredient-name evidence

The ingredient name exactly matches the official 2025 EU glossary of common ingredient names.

#8746 · DIHYDROXYPROPYL CYSTINE

Ingredients with overlapping formulation functions

DIHYDROXYDIMETHOXYCHALCONEHUMECTANT, SKIN CONDITIONING

DIHYDROXYISOPROPYL PALMOYLPALMAMIDEHAIR CONDITIONING, HUMECTANT, SKIN CONDITIONING, SKIN PROTECTING

DIHYDROXYPROPYL ARGININEHAIR CONDITIONING, HUMECTANT, SKIN CONDITIONING

DIHYDROXYPROPYL ARGININE HCLHAIR CONDITIONING, HUMECTANT, SKIN CONDITIONING

DIHYDROXYPROPYL PG-GLUCOSIDEHUMECTANT, SKIN CONDITIONING

DIHYDROXYPROPYL PROLINESKIN CONDITIONING - EMOLLIENT; HUMECTANT

DIHYDROXYPROPYLTRIMONIUM CHLORIDEHUMECTANT

DIISONONYL ETHERHUMECTANT

Additional official and scientific sources

11 external databases to check this identity in

Each link searches that source for this identity. What each source is, and its legal weight

ECHA CHEM / Information on chemicals PubChem PUG REST EU Safety Gate cosmetic product alerts ECHA CHEM US EPA CompTox Cosmetic Ingredient Review safety assessments FDA Global Substance Registration System ILO/WHO International Chemical Safety Cards Japan NITE-CHRIP NIOSH Pocket Guide to Chemical Hazards OECD eChemPortal

How DIHYDROXYPROPYL CYSTINE appears in the CosIng inventory

The CosIng inventory lists DIHYDROXYPROPYL CYSTINE as a cosmetic ingredient and this page links it to 0 annex records. The inventory entry captures names and identifiers, while the annex records show where the substance is prohibited, restricted or positively listed in EU cosmetics law.

DIHYDROXYPROPYL CYSTINE is also tagged with 3 cosmetic functions in the official data. Function labels describe intended use, but they do not replace regulatory review of linked annex records before formulation or labelling work.

Frequently asked questions

DIHYDROXYPROPYL CYSTINE is listed in the EU CosIng ingredient inventory with no direct annex restriction records linked at this time. Absence of an annex link does not guarantee unrestricted use — always verify against the current official CosIng database before formulating.

According to the EU CosIng inventory, DIHYDROXYPROPYL CYSTINE carries the following function designation(s):

Use the INCI Checker to screen a full ingredient list across selected markets, or compare this substance across all supported market datasets.

Open INCI Checker

Source note for DIHYDROXYPROPYL CYSTINE

This page reproduces the CosIng inventory entry for DIHYDROXYPROPYL CYSTINE from public European Commission cosmetic ingredient materials and shows linked identifiers even when no direct annex match is currently attached.

Use this inventory page to research DIHYDROXYPROPYL CYSTINE and compare linked records, but verify restrictions and legal status against the current official source text and law before making regulatory decisions.

View sources View updates

Tools & next steps

Check your formula

Scan a full INCI list to detect DIHYDROXYPROPYL CYSTINE and any linked EU annex restrictions or allergen flags.

INCI Checker

Search similar ingredients

Find other inventory ingredients and annex entries related to DIHYDROXYPROPYL CYSTINE, its identifiers or nearby name variants.