Gamma-Undecalactone

What is Gamma-Undecalactone?

Gamma-Undecalactone is a synthetic cyclic ester, chemically known as 5-heptyltetrahydrofuran-2-one, produced through esterification processes from fatty acids. Primarily utilized in the fragrance sector of cosmetics, this colorless to pale yellow liquid imparts distinctive fruity, peach-like, and coconutty aroma notes. It integrates into formulations like lotions, shampoos, and perfumes to define scent profiles by synergizing with other aroma compounds. Beyond scent contribution, it neutralizes undesirable odors from carrier ingredients or preservatives, enhancing overall product acceptability. As a solvent, it facilitates the dispersion of lipophilic actives and oils, promoting uniform texture and controlled release in anhydrous or emulsified systems. Its volatility aids in achieving balanced evaporation for lingering yet non-overpowering fragrance effects.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 1 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.
Solvent
Dissolves and carries other ingredients, helping control viscosity, evaporation rate, and delivery of actives in both water- and oil-based systems.

Benefits

Enhances products with appealing peachy and creamy scent notes.

Neutralizes off-odors for improved sensory experience.

Supports ingredient solubility and formula stability as a solvent.

Who It's For

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

Who May Benefit Who Should Avoid
Users enjoying subtle fruity fragrances in daily skincare.
People with fragrance allergies or sensitivities.
Individuals sensitive to raw material smells seeking masked odors.
Preferers of completely unscented products.
Those preferring non-comedogenic scented formulas.
Those experiencing reactions to synthetic aroma compounds.

Safety Notes

  • Low hazard rating from EWG assessment.
  • Safe for use within established fragrance industry concentration limits.

Frequently Asked Questions about Gamma-Undecalactone

What scent does Gamma-Undecalactone provide?

It offers fruity, peachy, and creamy coconut-like notes to cosmetic products.

Is it suitable for acne-prone skin?

Yes, with a comedogenic rating of zero, it does not clog pores.

What roles does it play in formulas?

Serves as fragrance ingredient, masking agent, and solvent for better blending.