Pentadecalactone

What is Pentadecalactone?

Pentadecalactone, also known as a 15-membered lactone ring compound, is a synthetically produced ingredient primarily used in the fragrance category of cosmetics and personal care products. It originates from chemical synthesis mimicking natural musks and functions as a fixative and aroma compound. In formulations like lotions, creams, and perfumes, it contributes a subtle, warm, animalic musk note that lingers on the skin, enhancing the overall olfactory experience. As a masking agent, it neutralizes undesirable base odors from other ingredients, creating a more pleasant and balanced scent profile. Its large molecular structure allows for slow evaporation, providing long-lasting fragrance without overwhelming intensity. Commonly found in low concentrations, it supports the sensory appeal of products without dominating the formula.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 1-3 View on EWG →
PubChem View on PubChem →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Fragrance ingredient
Contributes scent character and/or masks base odors, shaping the overall sensory experience of the formula (subject to allergen and IFRA considerations).
Masking
Reduces perception of unpleasant odors or tastes by neutralizing them or covering them with more acceptable sensory notes.

Benefits

Enhances product scent with a soft, persistent musk aroma.

Neutralizes unwanted odors for a cleaner sensory experience.

Supports fragrance stability and longevity in formulations.

Who It's For

A quick guide for who this ingredient may suit (and who should be cautious).

Who May Benefit Who Should Avoid
Individuals seeking subtle, long-lasting fragrance in skincare.
People with known fragrance sensitivities or allergies.
Those sensitive to strong chemical smells preferring masked formulas.
Individuals preferring completely unscented products.
Users of scented lotions or body products for sensory enjoyment.
Those experiencing skin reactions to musk compounds.

Safety Notes

  • Regarded as low hazard in cosmetic use by safety assessments.
  • Minimal comedogenic potential, suitable for most skin types.

Frequently Asked Questions about Pentadecalactone

What does pentadecalactone smell like?

It provides a mild, warm musk scent similar to natural musks, adding depth without intensity.

Is pentadecalactone safe for daily skincare use?

Safety evaluations support its use in cosmetics at standard levels with low risk.

Does it clog pores?

It has a non-comedogenic rating, making it unlikely to contribute to pore blockage.