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Ingredient directory

Hydroxystearic Acid/adipic Acid/glycerin Crosspolymer

This polymeric ingredient is a multifunctional skin conditioning agent, providing emollient and occlusive benefits while significantly enhancing formulation stability. It aids in blending immiscible phases, ensuring uniform product texture and integrity.

Directory entry · Individual source review pending

This profile is awaiting an individual source review. Treat its ratings, dose estimates and compatibility labels as provisional; they are not medical advice or proof of a finished product’s effects.

Emollient Emulsifying Emulsion Stabilizing Skin Conditioning

Science

Mechanism of Action

HYDROXYSTEARIC ACID/ADIPIC ACID/GLYCERIN CROSSPOLYMER works on the skin by forming a hydrating barrier that softens and smooths its surface, acting as an effective emollient. Its occlusive properties create a protective film, significantly reducing transepidermal water loss and thereby maintaining optimal skin hydration. Furthermore, within a formulation, it functions as an emulsifier and emulsion stabilizer, adeptly combining oil and water components to prevent separation and sustain product homogeneity.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

This crosspolymer enhances the overall stability of formulations, effectively preventing phase separation and maintaining consistent product integrity and texture over time.

Safety

Safety Profile

CIR Status
Under review
Sensitization risk Low

The CIR Expert Panel is currently reviewing this and related polymeric ingredients. While a specific maximum concentration for the crosspolymer is not yet designated, its constituent monomers, Hydroxystearic Acid and Glycerin, have been affirmed as safe by CIR. Hydroxystearic Acid is considered safe for general use up to 10% and in leave-on products up to 5%. Studies on a closely related crosspolymer, Trimethylpentanediol/Adipic Acid/Glycerin Crosspolymer, indicated low acute oral toxicity and only slight, transient eye irritation. The irritation potential of the adipic acid monomer is understood to be mitigated within the polymer structure, leading to a low irritancy profile, suitable for sensitive skin and delicate areas, as supported by 'Irritant Free' ratings for similar crosspolymers.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

This versatile crosspolymer is a valuable ingredient, offering significant emulsion stabilization and broad-spectrum skin conditioning benefits with a low risk of irritation or comedogenicity, making it suitable for all skin types.

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