HEXADECANOLACTONE

Allergen CAS: 109-29-5CosIng #56367

HEXADECANOLACTONE is identified as a fragrance allergen subject to mandatory label declaration under Regulation (EC) No 1223/2009.

Regulatory data checked on 2026-09-05. The legal status follows Regulation (EC) No 1223/2009 and its annexes; the substance is identified from the European Commission's CosIng database.

About the ingredient

Oxacycloheptadecan-2-one; Hexadecanolide; dihydroambrettolide; juniperolactone

New labelling obligation

HEXADECANOLACTONE is on the extended fragrance-allergen list of Regulation (EU) 2023/1545. Products placed on the market after 31 July 2026 must name it on the label when its concentration exceeds 0.001% (leave-on) or 0.01% (rinse-off).

The full list of new allergens and the deadlines — read the article

Functions in cosmetics

Frequently asked questions

  • Is HEXADECANOLACTONE safe in cosmetics?

    HEXADECANOLACTONE is a fragrance allergen that must be named in the ingredient list once it exceeds 0.001% in leave-on products or 0.01% in rinse-off products. Regulation (EU) 2023/1545 extended this labelling duty well beyond the original 26 substances.

  • What functions does HEXADECANOLACTONE perform in cosmetics?

    According to the European Commission's CosIng database, HEXADECANOLACTONE performs the following functions in cosmetics: FRAGRANCE, PERFUMING. Functions are defined in the CosIng glossary and describe the technological role of a substance in the finished product.

  • Are there Safety Gate alerts concerning HEXADECANOLACTONE?

    Our copy of the EU Safety Gate database currently contains no alerts linking HEXADECANOLACTONE to a cosmetic recall. The database is refreshed regularly from the European Commission's official Safety Gate system.

Want to know when a cosmetic on your shelf gets recalled?

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