Gamma-Decalactone

What is Gamma-Decalactone?

Gamma-Decalactone, also called 5-hexyloxolan-2-one, is a synthetic gamma-lactone, a type of cyclic ester with a molecular formula C10H18O2. It occurs naturally in some fruits but is produced commercially for its sweet, fruity scent evoking peaches, apricots, and coconut cream. In cosmetics, it functions exclusively as a fragrance ingredient, imparting characteristic aroma notes that define a product's sensory identity. It blends seamlessly into formulations like lotions, creams, shampoos, and perfumes, typically at trace levels to enhance appeal and cover base odors from active components. Regulatory bodies affirm its use within defined limits, with evaluations confirming low skin penetration and minimal reactivity. Its colorless, oily liquid form ensures stability in emulsions and anhydrous products, supporting diverse application formats without altering texture.

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

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).

Benefits

Delivers a natural-like peachy fragrance for enjoyable product use

Rated low hazard by safety assessors, suitable for everyday cosmetics

Non-comedogenic, avoiding pore blockage in facial products

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 preferring scented skincare for sensory pleasure
People with known fragrance sensitivities or allergies
Users with normal or oily skin seeking non-pore-clogging options
Individuals experiencing irritation from synthetic scents
Those wanting subtle fruity notes in lotions or body products
Users opting for completely unscented formulations

Safety Notes

  • Earned top safety rating from environmental health databases
  • Approved for cosmetic use by regulatory authorities with usage limits

Frequently Asked Questions about Gamma-Decalactone

What does Gamma-Decalactone smell like?

It has a sweet, creamy peach-coconut aroma, enhancing cosmetic sensory profiles.

Is it safe for sensitive skin?

Safety data indicates low hazard and irritation risk for typical cosmetic concentrations.

Does it clog pores?

Rated zero comedogenic, making it suitable for acne-prone skin.