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Ingredients

Ingredient Dictionary

2,4-DIAMINOPHENOXYETHANOL HCL

Molecular structure

How much products actually contain

No product states its amount yet.

Of the products containing it, 0 list it before the 1% line and 8 after it (usually 1% or less).

Products using this ingredient

8 of 8 confirmed · likeliest to carry enough first

Definition

US FDA substance register · UNII Z5Y843J6KQ · registered name 2,4-DIAMINOPHENOXYETHANOL HYDROCHLORIDE · single chemical substance

Source: US FDA Unique Ingredient Identifier (UNII)

Cosmetic roles

Dyes hairHAIR DYEING

Safety & regulatory references

Banned
South Korea
Restricted or banned
South Korea · Taiwan
Restricted
Taiwan · United Kingdom

Source: MFDS (Korea) cosmetic regulatory information · ASEAN Cosmetic Directive · EU Cosmetics Regulation · Taiwan FDA cosmetic ingredients · Taiwan FDA cosmetic regulations · UK cosmetics regulations (OPSS)

ASEAN

  • Field of application and/or use : Hair dye substance in oxidative hair dye products. Use for dyeing eyelashes and eyebrows is not permitted.
  • Other limitations and requirements : After mixing under oxidative conditions the maximum concentration applied to hair must not exceed 2.0 % (as hydrochloride) The direction for use “wear suitable gloves” must be included in label or leaflet text.
  • Conditions of use and warning which must be printed on the labels : The mixing ratio must be printed on the label. Hair colorants can cause severe allergic reactions. Read and follow instructions. This product is not intended for use on persons under the age of 16. Temporary “black henna” tattoos may increase your risk of allergy. Do not colour your hair if: • you have a rash on your face or sensitive, irritated and damaged scalp, • you have ever experienced any reaction after colouring your hair, • you have experienced a reaction to a temporary “black henna” tattoo in the past Do not use to dye eyelashes or eyebrows

China

  • Maximum concentration : 2%

European Union

  • Product Type, body parts : (a) Hair dye substance in oxidative hair dye products (b) Products intended for colouring eyelashes
  • Other : For (a) and (b): After mixing under oxidative conditions the maximum concentration applied to hair or eyelashes must not exceed 2,0 % (as hydrochloride) (b) For professional use only.
  • Wording of conditions of use and warnings : (a) To be printed on the label: The mixing ratio. “ Hair colorants can cause severe allergic reactions. Read and follow instructions. This product is not intended for use on persons under the age of 16. Temporary ‘black henna’ tattoos may increase your risk of allergy. Do not colour your hair if: — you have a rash on your face or sensitive, irritated and damaged scalp, — you have ever experienced any reaction after colouring your hair, — you have experienced a reaction to a temporary ‘black henna’ tattoo in the past.” (b) To be printed on the label: The mixing ratio.“For professional use only. This product can cause severe allergic reactions. Read and follow instructions. This product is not intended for use on persons under the age of 16. Temporary ‘black henna’ tattoos may increase the risk of allergy. Eyelashes shall not be coloured if the consumer: — has a rash on the face or sensitive, irritated and damaged scalp, — has experienced any reaction after colouring hair or eyelashes, — has experienced a reaction to a temporary ‘black henna’ tattoo in the past. Rinse eyes immediately if product comes into contact with them.”

Source: MFDS (Korea) cosmetic regulatory information

Restriction III/242

Source: EU CosIng ingredient list

Reviewed by CIR: Final Report: Amended Safety Assessment of 2,4-Diaminophenoxyethanol HCl and 2,4-Diaminophenoxyethanol Sulfate as Used in Cosmetics

Source: US Cosmetic Ingredient Review (CIR)

Reviewed by CIR: Final Amended Report on the Safety Assessment of 2,4-Diaminophenoxyethanol HCl and 2,4-Diaminophenoxyethanol Sulfate

Source: US Cosmetic Ingredient Review (CIR)

More data — names, identifiers, properties, test records, literature

Names & identifiers

2,4-DIAMINOPHENOXYETHANOL HCLINCI염산2,4-디아미노페녹시에탄올Korean label name (MFDS standard)Ethanol, 2-(2,4-diaminophenoxy)-, dihydrochlorideSynonym
CAS No.chemical registry number
66422-95-5
EC No.EU chemical inventory number
266-357-1
DTXSIDUS EPA chemical ID
DTXSID3070462
DTXCIDUS EPA compound ID
DTXCID0044812
IUPAC
2-(2,4-Diaminophenoxy)ethan-1-ol--hydrogen chloride (1/2)
Molecular formula
C8H14Cl2N2O2
Molecular weight
241.11 g/mol

Measured properties

Appearance
Solid, [MSDSonline] Light grey to light pink solid, [EC]

Values measured on the substance itself, not a specification for a commercial raw material.

Source: PubChem

What products actually use it for

What the 3 products reported to the US EPA with this ingredient use it for. Products outside cosmetics are included, so the top few rows are its main uses.

  • Dye3

Source: US EPA CompTox dashboard

Irritation and sensitisation studies

3 skin studies and 2 eye studies are on record.

Classed as highly irritating1Classed as low2

The studies disagree (the most common conclusion covers 33%), so they do not establish that this ingredient is irritating. These tests are on the raw material itself; irritation at the amount in a finished product is a different question.

See all 5 studies
  • Studies Indicate No Significant Irritation
    skin irritation: in vivo · Screening · OECD Guideline 404 (Acute Dermal Irritation / Corrosion) according to
  • High Frequency of Sensitization
    skin sensitisation: in vivo (LLNA) · Screening · according to OECD Guideline 429 (Skin Sensitisation: Local Lymph Node Assay)
  • Not likely to be sensitizing
    skin sensitisation: in vivo (non-LLNA) · Screening · according to OECD Guideline 406 (Skin Sensitisation)
  • Studies Indicate No Significant Irritation
    eye irritation: in vivo · Screening · OECD Guideline 405 (Acute Eye Irritation / Corrosion) according to
  • Severe Irritation
    eye irritation: in vivo · Screening · OECD Guideline 405 (Acute Eye Irritation / Corrosion) according to

Source: US EPA CompTox dashboard

Related literature

Linked databases 20