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AMODIMETHICONE HYDROXYSTEARATE.

Valuable CAS 299186-05-3 / HAIR CONDITIONING

An advanced silicone-fatty acid hybrid that creates a protective, breathable film on skin while delivering superior conditioning benefits. This amine-functionalized silicone demonstrates exceptional adherence properties, making it particularly effective in primers and long-wear formulations.

skin conditioning emollient film forming texture enhancer

Science

Forms a non-occlusive protective barrier through its unique dual structure - the amodimethicone base provides film-forming properties while the hydroxystearate modification enhances skin substantivity. This combination reduces transepidermal water loss, smooths surface texture, and imparts a distinctive silky feel without compromising breathability.


Research

High confidence
Effective range 6–15%
Optimal

15%

Key findings

  1. 01 Demonstrates effective skin conditioning without systemic absorption at therapeutic concentrations

Transparency

Not commonly dusted

As a specialized conditioning agent with established safety data, this ingredient is typically used at appropriate concentrations without dusting concerns.


The Formula

Solubility
Oil
Optimal pH 4 – 6
0 7 14

Stability

Exhibits excellent stability in conventional cosmetic emulsions within the specified pH range, which aligns with optimal skin barrier compatibility.

Synergies

  • other silicones
  • emollients
  • film-forming polymers

Conflicts

  • strong oxidizing agents
  • highly anionic surfactant systems

Safety

CIR Status
Safe as used
Max tested
15%
Pregnancy
Safe
Sensitization risk Low

CIR Expert Panel confirms safety when properly formulated to minimize irritation. Insufficient data for airbrush applications due to inhalation concerns.


Your Skin

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

Our Assessment

Valuable

A sophisticated conditioning agent that excels in products requiring enhanced adherence and superior sensory properties across all skin types.


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