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Moumoujus

BUTYLPHTHALIMIDE.

Valuable CAS 1515-72-6 / PLASTICISER, SKIN CONDITIONING

A multifunctional cosmetic ingredient that serves as a high-polarity solvent and skin-conditioning agent with antimicrobial properties. It excels at stabilizing crystalline UV filters in sunscreen formulations while providing film flexibility in nail products. This versatile compound demonstrates both antifungal activity and broad compatibility across different skin types.

Summary

solvent plasticiser skin conditioning UV filter stabilizer

Science

Mechanism of Action

Works by dissolving and stabilizing UV filters to prevent crystallization, while conditioning skin through its solvent properties. Additionally exhibits antimicrobial effects by disrupting fungal biofilm formation and inhibiting hyphal development in pathogenic organisms.

Research

Clinical Evidence

Medium confidence
Effective range 0.1–40%
Optimal

10%

Key findings

  1. 01 Demonstrated antifungal efficacy against Candida species at 100 µg/ml MIC with biofilm inhibition at 10-50 µg/ml concentrations
  2. 02 Proven UV filter stabilization performance across 0.1-40% concentration range in sunscreen applications

Transparency

Dusting Analysis

Not commonly dusted

Functional ingredient used at meaningful concentrations rather than trace amounts for marketing purposes

The Formula

Formulation

Solubility
Oil
Optimal pH 5 – 8
0 7 14

Stability

Demonstrates excellent stability in anhydrous systems and remains stable in emulsions within physiological pH range, but susceptible to hydrolysis under extreme pH conditions

Synergies

  • Avobenzone
  • Oxybenzone
  • Other crystalline UV filters

Conflicts

  • Strong oxidizing agents
  • Strong acids
  • Strong bases

Safety

Safety Profile

CIR Status
Safe as used
Max tested
40%
Sensitization risk Low

CIR Expert Panel assessment confirms safety for cosmetic use. Neat forms may cause irritation, but formulated products at typical use levels are well-tolerated and non-sensitizing.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

A reliable multifunctional ingredient that enhances product stability and performance while maintaining excellent safety and skin compatibility profiles.

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