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Moumoujus

2-ETHYLHEXYLAL.

Questionable CAS 22174-70-5 / SOLVENT

2-Ethylhexylal is a specialized acetal compound that serves as a high-performance solvent and fragrance carrier in cosmetic formulations. Its hydrophobic properties make it particularly valuable for enhancing water resistance and improving the sensory characteristics of skincare products. This ingredient excels at dissolving other cosmetic actives and resins while functioning as an effective cosolvent for silicone oils.

Summary

solvent fragrance carrier water-resistance enhancer

Science

Mechanism of Action

Functions as a dissolving agent that facilitates the incorporation and distribution of active ingredients throughout formulations, while its hydrophobic nature creates water-resistant barriers and enhances product spreadability on skin

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

As a functional solvent rather than an active ingredient, 2-ethylhexylal is not typically subject to dusting practices

The Formula

Formulation

Solubility
Oil
Optimal pH 5 – 10
0 7 14

Stability

Demonstrates excellent stability in neutral to alkaline conditions but undergoes hydrolysis in acidic environments, breaking down into alcohol and aldehyde components

Synergies

  • silicone oils
  • fragrance compounds
  • water-resistant actives

Conflicts

  • strong acids
  • oxidizing agents

Safety

Safety Profile

CIR Status
Not reviewed
Sensitization risk Unknown

Currently under ECHA evaluation (CoRAP 2024-2026) for potential reproductive toxicity and PBT properties, though not presently restricted by FDA or EU regulations

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Questionable

While functionally effective as a solvent and carrier, ongoing regulatory scrutiny regarding potential toxicity concerns warrants cautious evaluation.

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