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Moumoujus

ALLYL CINNAMATE.

Optional CAS 1866-31-5 / PERFUMING

Allyl Cinnamate is an aromatic ester primarily valued for its spicy, warm, balsamic aroma, often described as peach/apricot-like, acting as a fragrance and masking agent in formulations.

Summary

Perfuming Masking

Science

Mechanism of Action

This aromatic ester is hydrolyzed by skin esterases into cinnamic acid and allyl alcohol. It also exhibits secondary properties as an acaricide in certain organisms by inhibiting acetylcholinesterase activity.

Research

Clinical Evidence

Medium confidence
Effective range 0.1–0.5%
Optimal

0.5%

Key findings

  1. 01 Safety assessments by IFRA/RIFM support its use in fragrance concentrates up to 3.0%.
  2. 02 Toxicological reviews report typical cosmetic use levels (up to 0.5%) as safe.

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Oil
Optimal pH 4 – 7
0 7 14

Stability

Stable in most cosmetic matrices but prone to hydrolysis at extreme pH levels due to its ester structure. Store in airtight containers away from heat and light.

Conflicts

  • Strong oxidizing agents
  • Strong bases
  • Strong acids

Safety

Safety Profile

CIR Status
Not reviewed
Max tested
0.5%
Sensitization risk Moderate

While not reviewed by CIR, it is assessed by RIFM and IFRA and is FDA GRAS for food. Considered a potential sensitizer/irritant in concentrated forms but safe for human health below 0.5%.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Optional

Allyl Cinnamate is an optional ingredient, primarily utilized for its pleasant aroma and masking properties, deemed safe in cosmetic formulations at concentrations up to 0.5%.

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References

Sources