Skip to main content
CosIng Checker
CosIng Checker
EU cosmetic ingredients, restrictions and safety
Login
EU AllergenCAS 101-86-0

HEXYL CINNAMAL — EU Regulated Fragrance Allergen

2-Phenylmethylideneoctanal, Hexyl cinnamaldehyde

HEXYL CINNAMAL is included in this site's EU fragrance-allergen reference set. The general declaration threshold is above 0.001% in leave-on products or above 0.01% in rinse-off products, but any linked Annex II or III conditions also apply.

This page links HEXYL CINNAMAL to 1 annex record in the EU cosmetics dataset. Declared on the label when present above 0.001% in leave-on products or 0.01% in rinse-off products under EU Cosmetics Regulation 1223/2009 Annex III.

Leave-on products
> 0.001%
Label declaration required
Rinse-off products
> 0.01%
Label declaration required
Check your formula for this allergen All allergens View annex entries for this CAS

Regulatory status

INCI name

HEXYL CINNAMAL

CAS number

101-86-0

Synonyms

2-Phenylmethylideneoctanal, Hexyl cinnamaldehyde

Declaration requirement

Must be declared on the cosmetic product label when present above 0.001% in leave-on products or above 0.01% in rinse-off products.

Legal basis

EU Cosmetics Regulation 1223/2009, Annex III

Additional chemical sources

Search the same identity in independent official chemistry and hazard databases. These sources provide context and do not replace the EU labelling rule above.

ECHA CHEM

EU substance information and CLP classification where available.

Search this identity

US EPA CompTox

EPA chemistry, exposure and toxicity data search.

Search this identity

Annex records for HEXYL CINNAMAL

Why HEXYL CINNAMAL matters for EU labelling

HEXYL CINNAMAL has a dedicated fragrance-labelling reference page and currently links to 1 annex record. Regulation (EU) 2023/1545 also added 56 allergens and updated existing entries, so current Annex III evidence remains authoritative.

Declared on the label when present above 0.001% in leave-on products or 0.01% in rinse-off products under EU Cosmetics Regulation 1223/2009 Annex III.

Allergen declaration is a labelling obligation, not an automatic ban. If additional Annex II or Annex III conditions apply through the linked records above, those conditions must be checked separately from the label declaration thresholds.

Frequently asked questions

HEXYL CINNAMAL is included in the fragrance-allergen labelling reference. A labelling rule does not by itself establish that an ingredient is permitted: an Annex II prohibition or additional Annex III restriction may also apply. Check every linked current annex record above.

Declaration of HEXYL CINNAMAL is mandatory when the concentration exceeds 0.001% (10 ppm) in leave-on cosmetic products or 0.01% (100 ppm) in rinse-off products. Below these thresholds, label declaration is not required but may be made voluntarily.

The concentration threshold applies to the allergen in the finished product. When the allergen is contributed by a fragrance blend, the allergen content of the blend (provided by the fragrance supplier) must be multiplied by the percentage of blend used in the formula. If the calculated total allergen concentration exceeds the threshold, it must be declared on the label.

Use the INCI Checker to paste your ingredient list. It checks dedicated allergen references including HEXYL CINNAMAL and scans all Annex II–VI entries, including the expanded Annex III records introduced or updated under Regulation (EU) 2023/1545.
Open INCI Checker

CAS 101-86-0 identifies HEXYL CINNAMAL in the EU regulatory databases. The annex records linked above show all Annex II–VI entries that share this CAS number, including any additional restriction or prohibition conditions beyond the allergen labelling requirement.

Source note for HEXYL CINNAMAL

This page combines the EU allergen-labelling rule for HEXYL CINNAMAL with 1 linked Annex II–VI record drawn from the current local dataset.

Use this page to review labelling logic for HEXYL CINNAMAL, but verify any final compliance decision against the current official allergen rules, annex text and source files.

View sourcesView updates

Tools & next steps

Check your formula

Scan a full INCI list for HEXYL CINNAMAL, the other EU allergens and any linked annex restrictions.

INCI Checker

Allergen references

Browse the site's dedicated allergen references and continue to the complete current Annex III records from HEXYL CINNAMAL.

View all allergens

Calculate the threshold

Calculate the finished-product level of HEXYL CINNAMAL contributed by a fragrance or raw-material blend.

Allergen calculator

Annex entries by CAS

View all EU annex records sharing CAS 101-86-0.

View CAS records