Fragrance avoidance
No fragrance-linked caution surfaced in the current profile.
This ingredient does not currently read as a fragrance-linked driver in the published evidence and hazard profile.
- beauty
- cleaning
- industrial
- pharma
Hydrofluoric acid
CAS 7664-39-3 · 100/100 · High conf.
Also registered as 4 other CAS numbers
12381-92-9 · 37249-79-9 · 32057-09-3 · 326604-75-5
Concern score
100/100Critical concern based on regulatory listings.
High confidence
Hydrofluoric acid in plain language
On cosmetic ingredient lists it appears as “Ammonium hexafluorophosphate”.
Also known as Ammonium hexafluorophosphate · Palmityl trihydroxyethyl propylenediamine dihydrofluoride · Saccharomyces/fluoride ferment · Hydrogen fluoride · fluorane · Fluohydric Acid
Show all 28 names
Fluorhydric Acid · Acide fluorhydrique · Acido fluoridrico · Anhydrous hydrofluoric acid · Antisal 2B · Fluoric acid · Fluorine hydride (FH) · Fluorowodor · Fluorwasserstoff · Fluorwaterstof · Hydrofluoride · Hydrogen fluoride (HF) · Porcelain Conditioner · RCRA waste number U134 · Rubigine · Ultradent Porcelain Etch · fluoridohydrogen · hydrofluoric acid (sara 302/313) (cercla) · hydrofluoric acid (sara iii) · hydrogen fluoride (sara iii) · hydrogen fluoride (sara 302/313) (cercla) · Hydrofluoricum acidum
Used in consumer products as a pH adjuster.
- pH adjuster
- Critical concern: no hazard classifications on record. It is banned in EU cosmetics.
Why it's flagged
Hydrofluoric acid, its normal salts, its complexes and hydrofluorides with exception of those given in Annex III is prohibited in cosmetic products under Annex II of the EU Cosmetics Regulation (EC) 1223/2009.
RestrictedEU EC — banned
The score describes this ingredient's chemical identity — its hazard profile from published classifications and regulatory status — not the safety of any product it appears in.
Regulation
Restrictions first, then routine listings from published regulatory sources.
- In marketed US drugs
- EU Annex II — prohibited
- EU prohibited in cosmetics
- Found in consumer products
- Beauty
- Cleaning
- Pharma
- Industrial
- View source →banned
EUEC
Annex II of EU Cosmetics Regulation (EC) 1223/2009: substances prohibited in cosmetic products.
EUCosIngActiveCosmetics Regulation annex II / ref 191.
- Cosmetics Regulation annex II / ref 191.Source →
USEPAcommercial use observedEPA CPDat observed this chemical in 450 composition records across product categories including Cleaning and safety, Personal care, Specialty occupational products. EPA CPDat classifies this chemical for functional uses including pH regulating agent.
- EPA CPDat observed this chemical in 450 composition records across product categories including Cleaning and safety, Personal care, Specialty occupational products. EPA CPDat classifies this chemical for functional uses including pH regulating agent.Source →
USFDAmarketed drug occurrenceFDA NDC lists this ingredient in 53 active drug products and 59 total products.
- FDA NDC lists this ingredient in 53 active drug products and 59 total products.Source →
USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.
- openFDA substance registry classifies this ingredient as chemical.Source →
Expert safety opinions
No expert opinion on file for Hydrofluoric acid. These are the independent scientific bodies that assess ingredients like this one; we show an opinion only when a record we hold cites it.
SCCS
EU Scientific Committee on Consumer Safety
No SCCS opinion on file.
CIR
Cosmetic Ingredient Review (US expert panel)
No CIR safety assessment on file.
Evidence & sources
No graded research studies for Hydrofluoric acid yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.
Where this comes from
- Open →
CosIng
regulatory · updated 2026-09-23
- Open →
EU CosIng Cosmetics Regulation Annexes
regulatory · updated 2010-10-15
- Open →
EPA Chemical and Products Database
exposure · updated jan 24 1989
- Open →
EPA DSSTox Identifiers
chemistry · updated 2025-12-29
- Open →
FDA National Drug Code Directory
regulatory · updated 2029-08-27
- Open →
FDA GSRS UNII
registry · updated 2026-02-26
- Open →
openFDA Substance
registry · updated 2026-05-24
- Open →
PubChem Live Enrichment
chemistry · updated 2026-05-17
Suitability
Context-specific fit derived from published classifications and the current ingredient evidence profile.
Good fit
Where it has been recorded
How often EPA CPDat has listed Hydrofluoric acid in a product composition. These are source records, not Greenveil catalog products.
Source records
450
Named organisations
6
Cleaning and safetyPersonal careSpecialty occupational productsLaboratory suppliesIndustrial productsCleaning products and household care
Typical roles
pH adjuster