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  • beauty
  • cleaning

N-Acetyl-L-tyrosine

CAS 29593-19-9 · 0/100 · High conf.

Also registered as 1 other CAS number

537-55-3

N-Acetyl-L-tyrosine chemical structure

Concern score

0/100Low concern — well-established and permitted without restriction (CIR safe when formulated as directed; EU CosIng).
High confidence

N-Acetyl-L-tyrosine in plain language

What it is

On cosmetic ingredient lists it appears as “Acetyl tyrosine”.

Also known as Acetyl tyrosine · N-acetyltyrosine · N-acetyltyrosin · Acetyl l-tyrosine · (2S)-2-acetamido-3-(4-hydroxyphenyl)propanoic acid · L-n-acetyltyrosine

Show all 23 names

N-acetyl l-tyrosine · (+)-(2S)-2-(Acetylamino)-3-(4-hydroxyphenyl)propanoic acid · (2S)-2-Acetylamino-3-(4-hydroxyphenyl)propanoate · (2S)-2-Acetylamino-3-(4-hydroxyphenyl)propanoic acid · 2-(acetylamino)-3-(4-hydroxyphenyl)propanoic acid · L-N-acetyl-Tyrosine · L-Tyrosine, N-acetyl- · L-Tyrosine, acetyl- · L-​Tyrosine, N-​acetyl- · Melanowhite-a · N-acetyl-tyrosine · N-Acetyltyrosine (VAN) · Tanogen hb · Tyrosine, (l)-, n-acetyl- · Tyr-Excel · Tyrosine, N-acetyl-, L- · UNII-DA8G610ZO5

What it does

Used in cosmetics as a skin-conditioning agent and a tanning agent.

  • Skin conditioning
  • Tanning
  • Conditioner
Is it a concern?
Low concern: no hazard classifications on record. It is listed for cosmetic use in the EU.

Why it's flagged

EPA CPDat observed this chemical in 38 composition records across product categories including Personal care.

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

No restrictions found. N-Acetyl-L-tyrosine appears in these published regulatory listings.

Recorded in these product areas

  • Found in consumer products
  • Beauty
  • Cleaning
  • EUCosIngActiveListed in CosIng inventory for cosmetic use.
    • Listed in CosIng inventory for cosmetic use.Source →
  • USEPAcommercial use observedEPA CPDat observed this chemical in 38 composition records across product categories including Personal care. EPA CPDat classifies this chemical for functional uses including Softener and conditioner, tanning.
    • EPA CPDat observed this chemical in 38 composition records across product categories including Personal care. EPA CPDat classifies this chemical for functional uses including Softener and conditioner, tanning.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 N-Acetyl-L-tyrosine. 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 N-Acetyl-L-tyrosine yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.

6 data sources

Where this comes from

  • CosIng

    regulatory · updated 2026-09-23

    Open →

  • EPA Chemical and Products Database

    exposure · updated September 2018

    Open →

  • EPA DSSTox Identifiers

    chemistry · updated 2025-12-29

    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)

Suitability

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

Fragrance avoidance

No fragrance-linked caution surfaced in the current profile.

Good fit

This ingredient does not currently read as a fragrance-linked driver in the published evidence and hazard profile.

Where it has been recorded

How often EPA CPDat has listed N-Acetyl-L-tyrosine in a product composition. These are source records, not Greenveil catalog products.

Source records

38

Named organisations

6

Personal care

Typical roles

Skin conditioningTanningConditioner
See products using N-Acetyl-L-tyrosine →

Catalog

Found in these products

Their ingredient lists include N-Acetyl-L-tyrosine; each product's own rating depends on its whole formula, so it is shown on the product page, not here.

See all 84 →Find products without it →