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Moumoujus

C16-17 ALKYL BENZOATE.

Valuable / ANTIMICROBIAL, SKIN CONDITIONING, SKIN CONDITIONING - EMOLLIENT, SOLVENT

A high-performance, multifunctional ester that provides a silk-like finish while acting as a sophisticated vehicle for active ingredients. It is prized in precision skincare for its ability to stabilize formulations and improve the application profile of UV filters and pigments without a greasy residue.

Summary

Emollient Solvent Dispersing Agent Antimicrobial Enhancer

Science

Mechanism of Action

It functions as a lightweight emollient that establishes a breathable occlusive barrier, effectively minimizing transepidermal water loss (TEWL). Beyond hydration, its high polarity allows it to act as a superior wetting agent and solvent, ensuring the uniform dispersion of mineral sunscreens and chemical filters while providing secondary antimicrobial support to the preservative system.

Research

Clinical Evidence

High confidence
Effective range 1–4%
Optimal

4%

Key findings

  1. 01 The CIR Expert Panel (2012) verified its safety profile, noting that long-chain alkyl benzoates are non-sensitizing and non-irritating at standard formulation levels.
  2. 02 Related studies on C12-15 chains demonstrated zero irritation even at 100% concentration, reinforcing the safety of the C16-17 variant.

Transparency

Dusting Analysis

Not commonly dusted
Min. effective
1%
Red flag below
0.1%

Typically used at functional levels (1-4%) to achieve its emollient and solvent properties; levels below 0.5% in a complex formula may indicate it is being used for marketing rather than performance.

The Formula

Formulation

Solubility
Oil
Optimal pH 3 – 9
0 7 14

Stability

Exhibits robust thermal stability and high resistance to oxidation, making it a more stable alternative to many botanical oils.

Synergies

  • Titanium Dioxide
  • Zinc Oxide
  • Chemical UV Filters
  • Preservative systems

Conflicts

  • Strong oxidizing agents
  • Strong acids
  • Strong bases

Safety

Safety Profile

CIR Status
Safe as used
Max tested
4%
Pregnancy
Safe
Sensitization risk Low

While 4% is the highest reported usage for this specific chain length, related benzoates are safely used up to 50%.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

An excellent, non-comedogenic texture enhancer and stabilizer that is indispensable for high-elegance sunscreen and pigment formulations.

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