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GERANYL ISOVALERATE.

Questionable CAS 109-20-6 / PERFUMING

Geranyl isovalerate is a fragrance ester frequently employed in personal care products for its enduring aromatic qualities and its capacity to condition the skin. While it enhances sensory appeal and skin feel, its identified potential as a sensitizer necessitates cautious application.

Fragrance Skin Conditioning

Science

This ingredient functions primarily as a fragrance component, delivering a lasting aroma to formulations. Beyond its aromatic contribution, geranyl isovalerate also exhibits skin-conditioning properties, helping to maintain skin health and texture.


Research

Low confidence
Effective range N/A
Optimal

N/A


Transparency

Not commonly dusted

The Formula

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

The compound demonstrates robust stability under standard storage conditions, maintaining compatibility across a variety of cosmetic and food applications. It offers a shelf life of 36 months when stored in a tightly sealed container under inert gas in a cool, well-ventilated environment.


Safety

CIR Status
Safe with restrictions
Sensitization risk Moderate

Evaluations by RIFM indicate geranyl isovalerate is not genotoxic. However, based on human studies and read-across data, it is identified as a skin sensitizer, with a No-Expected Sensitization Induction Level (NESIL) of 5000 μg/cm2. Some reports also describe it as a skin irritant. Acute oral and dermal toxicity are low, with LD50 values exceeding 5 g/kg in rats and rabbits, respectively. Repeated dose toxicity showed a NOAEL of 1000 mg/kg/day, and developmental/fertility toxicity had a NOAEL of 440 mg/kg/day. While listed by the FDA as a GRAS flavoring agent (FEMA 2518), its use in skincare is restricted due to its sensitizing potential, though specific maximum concentrations for cosmetic use were not provided.


Your Skin

No Normal
No Dry
No Oily
No Sensitive
Irritancy Unknown
Comedogenicity Unknown

Our Assessment

Questionable

Geranyl isovalerate offers skin conditioning and a pleasant fragrance but its classification as a sensitizer and potential irritant makes it a questionable choice for precision skincare formulations, especially given the lack of specific efficacy data.


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