Transparent, luminous, and green-rosy. Like Hedione with a rose garden lean instead of jasmine. Airy and diffusive rather than concentrated. At high dose, it creates an almost visible brightness around a composition -- radiance made olfactory. Greener and more vegetal than standard Hedione.
Evolution over time
Immediately
Immediately
Bright green-rose transparency, airy radiance
After a few hours
After a few hours
Luminous diffusive halo, soft floral shimmer
After a few days
After a few days
Faint clean radiance, rapidly dissipating
The Full Story
Hediros a belongs to the Hedione family -- derivatives of methyl dihydrojasmonate that add transparency, luminosity, and diffusion to compositions. Where standard Hedione leans jasmine-citrus, Hedirosa introduces rose-green qualities, creating a bridge between jasmine transparency and rose freshness.
The molecule inherits Hedione's signature properties: notable diffusion, low tenacity on skin but strong sillage, and the ability to make other materials smell brighter and more radiant. The rose-green modification gives it a slightly different application window -- useful in rose-forward compositions where standard Hedione's jasmine character might compete.
Like all Hedione-type materials, Hedirosa is most effective at relatively high concentrations (5-20%), where it creates a luminous halo around the composition rather than asserting its own identity.
Hedione-type molecules are among the few fragrance ingredients proven to activate both olfactory and pheromone-processing brain regions. A 2015 study in NeuroImage found that Hedione stimulated the hypothalamus via the VNO pathway -- a response not triggered by other odorants.
Extraction & Chemistry
Extraction method: Fully synthetic. Chemical synthesis in the methyl dihydrojasmonate family.
Molecular Formula
C₁₁H₂₂O
CAS Number
40596-76-7
Botanical Name
N/A — synthetic (methyl dihydrojasmonate type)
IFRA Status
No known restrictions
Physical Properties
Odor Strength
Medium
Appearance
Colorless to pale yellow liquid
Boiling Point
280°C @ 760 mmHg (est)
Flash Point
>200°F (>93°C)
Specific Gravity
0.960 to 0.975 @ 25°C
In Perfumery
Hedirosa functions as a diffuser, brightener, and rose modifier. Used at high concentrations (5-20%) to add luminosity and projection to rose, green, and fresh compositions. Its rose-green character makes it a complement to natural rose absolute, where it adds modern transparency to the absolute's density.