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BUTYL PHENETHYL ETHER.

Valuable CAS 5331-14-6 / PERFUMING

Butyl phenethyl ether is a sophisticated masking agent that neutralizes unpleasant odors from raw materials in skincare formulations without introducing detectable fragrance. This oil-soluble compound enables truly fragrance-free products by selectively blocking malodor perception while maintaining complete olfactory neutrality.

masking

Science

Works by interacting with olfactory receptors to suppress the perception of undesirable chemical odors from fatty acids, surfactants, and other raw materials, effectively masking base notes without contributing its own scent profile.


Research

High confidence
Effective range 0.1–0.5%
Optimal

0.3%

Key findings

  1. 01 Achieved superior odor neutralization of fatty acids and surfactants in fragrance-free formulations

Transparency

Not commonly dusted

As a functional masking agent with established efficacy data, this ingredient is rarely subject to cosmetic dusting practices.


The Formula

Solubility
Oil
Optimal pH 3 – 11
0 7 14

Stability

Exceptionally stable ether structure provides resistance to hydrolysis and oxidation across wide pH ranges without reactivity concerns with standard cosmetic actives


Safety

CIR Status
Not reviewed
Max tested
1%
Sensitization risk Low

Regulated under RIFM safety protocols and approved within IFRA standards, with non-sensitizing profile at typical usage concentrations


Your Skin

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

Our Assessment

Valuable

An effective and gentle masking agent that enables truly fragrance-free formulations across all skin types.


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