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Benzyl Alcohol

Also used as preservative — regulated under EU Regulation 2023/1545 (expansion of declarable fragrance allergens from 26 to 81+).

Prepared by Allergen81 Compliance Team · Last reviewed September 2026. Provided for information only — always verify against the official regulation and your responsible person's assessment.

Sources & references

  • Commission Regulation (EU) 2023/1545 — full text on EUR-Lex
  • CosIng — the European Commission's cosmetic ingredient database
  • PubChem (NIH) — substance record for CAS 100-51-6

CAS Number

100-51-6

EC Number

202-859-9

INCI Name

BENZYL ALCOHOL

Status

Declarable

Declaration thresholds (EU 2023/1545)

Leave-on products

0.100%

= 10 mg/kg (10 ppm)

Rinse-off products

1.00%

= 100 mg/kg (100 ppm)

Benzyl Alcohol must be separately declared in the ingredient list (INCI) when its concentration in the finished product exceeds these values. Below the threshold, no separate mention is required.

Essential oils containing Benzyl Alcohol

Typical concentration ranges (of the oil itself, not the finished product):

Ylang Ylang Oil0.1–1%Jasmine Absolute1–5%

Example: at 1.5% lavender oil in a leave-on cream with linalool at up to 45%, the product contains up to ~0.68% linalool — far above the 0.001% threshold, so it must be declared.

Check your formula against Benzyl Alcohol automatically

Upload your supplier PDFs and Allergen81 extracts every allergen, runs the threshold math (including pre-hapten grouping), and generates your INCI-compliant label.

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Benzyl Alcohol — FAQ

When does Benzyl Alcohol need to be declared on a cosmetic label?

Under EU Regulation 2023/1545, Benzyl Alcohol must be listed separately in the ingredient declaration (INCI) when its concentration in the finished product exceeds 0.100% in leave-on products or 1.00% in rinse-off products.

Which essential oils contain Benzyl Alcohol?

Benzyl Alcohol naturally occurs in: Ylang Ylang Oil, Jasmine Absolute. Typical concentration ranges in these oils vary — always confirm with a supplier IFRA certificate or GC/MS report.

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