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Valproic acid

CAS 875128-67-9

Also registered as 1 other CAS number

99-66-1

Valproic acid chemical structure

Concern score

Not assessed — no hazard data yet.

Valproic acid in plain language

What it is

Also known as 2-Propylpentanoic acid · Pentanoic acid, 2-PROPYL · Valproic acid extended release · 2,2-Di-n-propylacetic acid · 2-Propan-1-ylpentanoic acid · 2-Propylvaleric acid

Show all 31 names

2-n-Propyl-n-valeric acid · 4-Heptanecarboxylic acid · Acide valproique · Acido valproico · Acidum valproicum · Convulex · Depakene · Depakine · Depakine-chrono · Di-n-propylacetic acid · Di-n-propylessigsaure · Dipropylacetic acid · Kyselina 2-propylvalerova · Mylproin · Myproic Acid · Propylvaleric acid · Pentanoic acid, 2-propyl- · Pentanoic acid, 2-​propyl- · Sigma V 0033000 · Stavzor · Vpa · Valproate (Valproic acid) · n-DPA · n-Dipropylacetic acid · valproate

What it does

Used in cosmetics as a skin-conditioning agent.

  • Skin conditioning
  • Conditioner
Is it a concern?
We haven't assessed a concern score for this ingredient yet. It is listed for cosmetic use in the EU.

Regulation

No restrictions found. Valproic acid appears in these published regulatory listings.

  • In marketed US drugs

Recorded in these product areas

  • Found in consumer products
  • Pharma
  • Food
  • EUCosIngActiveListed in CosIng inventory for cosmetic use.
    • Listed in CosIng inventory for cosmetic use.Source →
  • USEPAcommercial use observedEPA CPDat observed this chemical in 2 composition records across product categories including Food and drug. EPA CPDat classifies this chemical for functional uses including Softener and conditioner, Pharmaceutical.
    • EPA CPDat observed this chemical in 2 composition records across product categories including Food and drug. EPA CPDat classifies this chemical for functional uses including Softener and conditioner, Pharmaceutical.Source →
  • USFDAmarketed drug occurrenceFDA NDC lists this ingredient in 25 active drug products and 26 total products.
    • FDA NDC lists this ingredient in 25 active drug products and 26 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 Valproic 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 Valproic acid yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.

7 data sources

Where this comes from

  • CosIng

    regulatory · updated 2026-09-23

    Open →
  • EPA Chemical and Products Database

    exposure · updated November 2007

    Open →
  • EPA DSSTox Identifiers

    chemistry · updated 2025-12-29

    Open →
  • FDA National Drug Code Directory

    regulatory · updated 2027-12-31

    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

    Open →
Reference links (1)
Openfda substance

en.wikipedia.org

Suitability

Context-specific fit derived from published classifications and the current ingredient evidence profile.

Food use

Nothing to weigh for this context yet.

No signal in this context

We have no published hazard signal for this ingredient, so we cannot say how it behaves in this context — that is missing evidence, not a clean result.

Fragrance avoidance

Nothing to weigh for this context yet.

No signal in this context

We have no published hazard signal for this ingredient, so we cannot say how it behaves in this context — that is missing evidence, not a clean result.

Where it has been recorded

How often FDA National Drug Code directory has listed Valproic acid in a product composition. These are source records, not Greenveil catalog products.

Source records

26

Typical roles

Skin conditioningConditioner
See products using Valproic acid →