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BIS-HYDROXY/METHOXY AMODIMETHICONE.

Valuable CAS 831241-93-1 / HAIR CONDITIONING

An aminosilicone polymer, Bis-Hydroxy/Methoxy Amodimethicone acts as a potent conditioner and film-former. It notably enhances hair smoothness and provides a protective barrier on the skin.

Hair Conditioning Skin Conditioning Film Forming

Science

Its positive charge enables selective adhesion to negatively charged, damaged hair, delivering long-lasting conditioning without excessive buildup. On skin, it forms a vapor-permeable film to minimize trans-epidermal water loss and protect against environmental aggressors.


Research

Medium confidence
Effective range 0.25–3%
Optimal

N/A

Key findings

  1. 01 Studies at 0.25% to 3.0% concentration demonstrated significant reductions in hair combing force (84.6% wet, 77.4% dry), indicating improved smoothness and reduced breakage. It also mitigated color fading after 15 washes.

Transparency

Not commonly dusted

The Formula

Solubility
Oil
Optimal pH 5.5 – 7
0 7 14

Stability

Its amine groups protonate in acidic conditions, developing a positive charge crucial for its conditioning action. It is oil-soluble and can be neutralized with malic acid for optimal formulation stability.


Safety

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

With a large molecular weight, this ingredient is unlikely to be significantly absorbed into the skin, supporting its safety. The CIR Expert Panel found it safe as used, noting an exception for incidental inhalation via airbrush devices.


Your Skin

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

Our Assessment

Valuable

This versatile aminosilicone offers significant conditioning and film-forming benefits for both hair and skin, with a strong safety profile and broad compatibility.


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