HENNA
2-Hydroxy-1,4-naphthoquinone
HENNA is listed in the EU CosIng inventory, but no direct annex records are linked on this page yet.
Regulatory evidence by market
This matrix separates verified ingredient rules from sources that are mapped but not yet imported. No imported rule does not mean the ingredient is permitted.
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| Market | Evidence status | Records | Source language |
|---|---|---|---|
| European Union | Source mapped Inventory entry; no linked annex rule | 0 | English and EU languages |
| Great Britain | Source mapped Official source mapped; ingredient rule not imported | 0 | English |
| Canada | Source mapped Official source mapped; ingredient rule not imported | 0 | English and French |
| New Zealand | Source mapped Official source mapped; ingredient rule not imported | 0 | English |
| ASEAN | Source mapped Official source mapped; ingredient rule not imported | 0 | English and national languages |
| China | Source mapped Official source mapped; ingredient rule not imported | 0 | Chinese with selected English material |
| Japan | Source mapped Official source mapped; ingredient rule not imported | 0 | Japanese; official English translation available |
| South Korea | Source mapped Official source mapped; ingredient rule not imported | 0 | Korean with some English names |
| United States | Evidence linked Permitted list with conditions Open this evidence | 1 | English |
| Australia | Source mapped Official source mapped; ingredient rule not imported | 0 | English |
| Brazil | Source mapped Official source mapped; ingredient rule not imported | 0 | Portuguese with INCI crosswalks |
| India | Source mapped Official source mapped; ingredient rule not imported | 0 | English and Hindi |
| Saudi Arabia | Source mapped Official source mapped; ingredient rule not imported | 0 | Arabic and English |
Chemical identity and properties
2-Hydroxy-1,4-naphthoquinone
Lawsone is 1,4-Naphthoquinone carrying a hydroxy function at C-2. It is obtained from the leaves of Lawsonia inermis. It has a role as an antifungal agent and a protective agent. It is a tautomer of a naphthalene-1,2,4-trione. — ChEBI
- IUPAC name
- 4-hydroxynaphthalene-1,2-dione
- Molecular formula
- C10H6O3
- Molecular weight
- 174.15 g/mol
- Exact mass
- 174.031694049 Da
- XLogP3
- 0.9
- Topological polar surface area
- 54.4 Ų
- Hydrogen-bond donors
- 1
- Hydrogen-bond acceptors
- 3
- Covalent units
- 1
- Defined stereocentres
- 0
Also known as
16 more reported names
External database identifiers
- ChEBI:CHEBI:44401
- ChEMBL:CHEMBL240963
- EPA DTXSID:DTXSID2025428
- PubMed:23841934
- PubMed:11720861
- PubMed:8691444
- PubMed:7492599
Retrieved from NIH PubChem on 2026-09-02 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.
Inventory details for HENNA
INCI name
HENNA
Description
2-Hydroxy-1,4-naphthoquinone
Record provenance
- Inventory reference
- 34247
- Imported identity
- HENNA
- Source update
- 13/06/2014
Annex records for HENNA
Key data
- BULKING
- Non-reactive (chemically inert), solid ingredients that dilute other solids and/or increase the volume of cosmetic products.
- HAIR DYEING
- Imparting color to hair. Hair dyeing preparations may be temporary, semi-permanent, or permanent, depending on the length of time the colorant remains on the hair.
- 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.
Related inventory evidence
Ingredients with overlapping formulation functions
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
How HENNA appears in the CosIng inventory
The CosIng inventory lists HENNA 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.
HENNA 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
Source note for HENNA
This page reproduces the CosIng inventory entry for HENNA 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 HENNA and compare linked records, but verify restrictions and legal status against the current official source text and law before making regulatory decisions.
Tools & next steps
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