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BUTYL ISOBUTYRATE.

Optional CAS 97-87-0 / PERFUMING

A volatile aromatic ester that serves as a perfuming agent in cosmetic formulations, delivering a distinctive fruity fragrance reminiscent of apple, banana, or pineapple. This GRAS-classified ingredient provides sensory enhancement through olfactory interaction while maintaining excellent safety profiles across diverse skin types.

perfuming

Science

Functions by releasing volatile aromatic compounds that interact with olfactory receptors to create pleasant fruity scent profiles, while its ester structure allows for controlled fragrance release in cosmetic matrices.


Research

Medium confidence
Effective range 4–8%
Optimal

4%

Key findings

  1. 01 Demonstrated non-irritating and non-sensitizing properties in 48-hour closed patch testing on human subjects

Transparency

Not commonly dusted

Primarily used as a fragrance component rather than an active ingredient, making dusting practices less relevant for this perfuming agent.


The Formula

Solubility
Oil
Optimal pH 1 – 7
0 7 14

Stability

Exhibits enhanced stability in acidic environments (pH 1.0-5.0), making it particularly suitable for acidic formulations. Remains stable under standard temperature and pressure conditions but requires careful handling due to flammability.

Conflicts

  • Strong oxidizing agents
  • Strong bases
  • Strong acids

Safety

CIR Status
Not reviewed
Max tested
8%
Sensitization risk Low

FEMA GRAS status (FEMA 2188) for food applications. RIFM safety assessments and IFRA Code of Practice support cosmetic use up to 8% in fragrance concentrates.


Your Skin

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Optional

A well-tolerated fruity fragrance component suitable for enhancing sensory experience across all skin types, though purely functional rather than performance-driven.


Related

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References