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3-HYDROXY-2,2-DIMETHYLPROPYL HYDROXYPIVALATE.

Optional CAS 1115-20-4 / NOT REPORTED

A multifunctional ester diol that serves as both a skin-conditioning agent and texture-enhancing solvent in specialized skincare formulations. Its unique branched molecular structure with dual hydroxyl groups provides emollient properties while helping to optimize product spreadability and skin feel.

skin conditioning solvent texture modifier emollient

Science

Works through its branched neopentyl structure to condition skin by forming a protective barrier that helps retain moisture and maintain skin flexibility. The dual hydroxyl groups enable mild water-binding activity, contributing humectant-like benefits while the ester backbone provides emollient properties that smooth skin texture.


Research

Medium confidence
Effective range ≤80%
Optimal

N/A

Key findings

  1. 01 80% aqueous solution demonstrated non-irritating properties in occlusive patch testing (BASF AG, 1974)
  2. 02 Pure concentrate showed moderate eye irritancy but low dermal toxicity (EPA/BASF, 2006)

Transparency

Not commonly dusted

Primarily used as a functional ingredient rather than an active, making dusting less relevant for this conditioning agent


The Formula

Solubility
Both
Optimal pH 4 – 7
0 7 14

Stability

Exceptionally stable at neutral pH with a hydrolysis half-life exceeding 100 years at pH 7, but stability decreases significantly in alkaline conditions (337 days at pH 8)

Conflicts

  • Strong oxidizing agents
  • Highly alkaline environments (catalyzes ester hydrolysis)

Safety

CIR Status
Not reviewed
Sensitization risk Low

EPA and ECHA classify as readily biodegradable with low acute dermal toxicity. Listed in EU CosIng database without specific concentration restrictions.


Your Skin

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

Our Assessment

Optional

A well-tolerated conditioning agent that enhances product texture and provides mild skin benefits, though not essential for most skincare routines.


Related

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References