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(1-6)-Alpha-glucomannan

CAS 37220-17-0 · 40/100 · High conf.

Concern score

40/100Moderate concern based on regulatory listings.
High confidence

(1-6)-Alpha-glucomannan in plain language

What it is

On cosmetic ingredient lists it appears as “Amorphophallus konjac root extract”.

Also known as Amorphophallus konjac root extract · Glucomannan · Konjac mannan · Konjac flour · Konnyaku · Konjac glucomannan (E 425 ii)

Show all 23 names

Konjac gum (E 425 i) · Amorphophallus konjac root glucomannan · Amorphophallus konjac root mannan · E-425 · Ins NO.425 · INS-425 · Konjac · Konjac glucomannan · Konjac-flour · Konnyaleu · Nutricol gp 6220 · Propol phoenix 2A · Rheolex rx-h · Ticagel konjac hv · Vistop d 2134 · Konjac gum · Konjak mannan

What it does

Used in cosmetics as a humectant and a film former. Amorphophallus Konjac Root Extract is the extract of the roots of Amorphophallus konjac, Araceae.

  • Humectant
  • Film forming
  • Thickener, emulsifier, gelling agent, stabilizer
  • Film former
Is it a concern?
Moderate 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 0 composition records across product categories including unclassified products.

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. (1-6)-Alpha-glucomannan appears in these published regulatory listings.

Recorded in these product areas

  • Found in consumer products
  • Industrial
  • EUCosIngActiveAmorphophallus Konjac Root Extract is the extract of the roots of Amorphophallus konjac, Araceae
    • Amorphophallus Konjac Root Extract is the extract of the roots of Amorphophallus konjac, AraceaeSource →
  • EUEFSAEFSA opinionRe-evaluation of konjac gum (E 425 i) and konjac glucomannan (E 425 ii) as food additives (EFSA ANS)
    • Re-evaluation of konjac gum (E 425 i) and konjac glucomannan (E 425 ii) as food additives (EFSA ANS)Source →
  • GLOBALJECFANOT SPECIFIEDJECFA evaluation lists ADI NOT SPECIFIED. Functional class: thickener, emulsifier, gelling agent, stabilizer.
    • JECFA evaluation lists ADI NOT SPECIFIED. Functional class: thickener, emulsifier, gelling agent, stabilizer.Source →
  • GLOBALJECFAEvaluatedJECFA evaluation record.
  • USEPAcommercial use observedEPA CPDat observed this chemical in 0 composition records across product categories including unclassified products. EPA CPDat classifies this chemical for functional uses including Humectant, Film former.
    • EPA CPDat observed this chemical in 0 composition records across product categories including unclassified products. EPA CPDat classifies this chemical for functional uses including Humectant, Film former.Source →
  • USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as polymer.
    • openFDA substance registry classifies this ingredient as polymer.Source →

Expert safety opinions

Independent scientific assessments cited by the records we hold, with the year and link where the record gives one.

  • 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.

  • EFSA

    European Food Safety Authority

    • Re-evaluation of konjac gum (E 425 i) and konjac glucomannan (E 425 ii) as food additives (EFSA ANS)

      2017 · EU EFSA listing · Read the source →

  • JECFA

    Joint FAO/WHO Expert Committee on Food Additives

    • JECFA evaluation lists ADI NOT SPECIFIED. Functional class: thickener, emulsifier, gelling agent, stabilizer.

      Year not recorded · GLOBAL JECFA listing · Read the source →

    • JECFA evaluation record.

      Year not recorded · GLOBAL JECFA listing · Read the source →

Evidence & sources

No graded research studies for (1-6)-Alpha-glucomannan 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 →

  • EFSA OpenFoodTox

    regulatory · updated 2026-10-04

    Open →

  • EPA Chemical and Products Database

    exposure · updated 2019-12-20

    Open →

  • EPA DSSTox Identifiers

    chemistry · updated 2025-12-29

    Open →

  • FDA GSRS UNII

    registry · updated 2026-02-26

    Open →

  • WHO JECFA Database

    regulatory · updated 2026-10-04

    Open →

  • openFDA Substance

    registry · updated 2026-05-24

    Open →
Reference links (1)
Openfda substance

cybercolloids.net

Read →

Suitability

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

Food use

Food-use source coverage is present in the current record.

Good fit

The ingredient appears in food-oriented source coverage or allowed-use references, which makes food use easier to support than a context with no domain signal at all.

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 (1-6)-Alpha-glucomannan in a product composition. These are source records, not Greenveil catalog products.

Named organisations

1

Typical roles

HumectantFilm formingThickener, emulsifier, gelling agent, stabilizerFilm former
See products using (1-6)-Alpha-glucomannan →

Catalog

Found in these products

Their ingredient lists include (1-6)-Alpha-glucomannan; each product's own rating depends on its whole formula, so it is shown on the product page, not here.

See all 216 →Find products without it →

Co-occurrence

Often appears with

Ingredients that frequently appear alongside (1-6)-Alpha-glucomannan in the catalog.