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BIS-AMINOETHOXYETHANE/GUANIDINE HCL COPOLYMER.

Valuable CAS 374572-91-5 / ANTIMICROBIAL

A high-performance cationic polymeric biocide engineered for superior microbial control without the irritation profile of traditional preservatives. It serves as a sophisticated antimicrobial agent that maintains skin surface hygiene while exhibiting exceptional stability in aqueous formulations.

Antimicrobial Preservative Booster Anti-acne Agent

Science

This copolymer utilizes a cationic charge-based mechanism. The positively charged guanidinium groups exert an electrostatic pull on the negatively charged phospholipids and lipopolysaccharides of microbial cell membranes, physically disrupting their integrity to cause rapid cellular expiration.


Research

High confidence
Effective range 0.1–1%
Optimal

0.5%

Key findings

  1. 01 Demonstrated parity with 2% mupirocin cream in the eradication of MRSA within skin infection models at concentrations between 0.5% and 1.0%.
  2. 02 Achieved a >5 log reduction in both Gram-positive and Gram-negative bacterial populations in topical applications at concentrations as low as 0.1%.

Transparency

Commonly dusted
Min. effective
0.1%
Red flag below
0.05%

Because it is effective at very low concentrations (0.1%), brands may include it at 'trace' levels (below 0.05%) to claim antimicrobial benefits without achieving true therapeutic or preservative-boosting efficacy.


The Formula

Solubility
Water
Optimal pH 6 – 9
0 7 14

Stability

Extremely heat-stable, non-volatile, and non-oxidizing, making it ideal for robust manufacturing processes.

Synergies

  • Chelating agents
  • Non-ionic surfactants
  • Preservative boosters

Conflicts

  • Sodium Lauryl Sulfate (SLS)
  • Carbomer
  • Xanthan Gum
  • Strongly anionic thickeners

Safety

CIR Status
Not reviewed
Max tested
1%
Sensitization risk Low

Significantly safer profile compared to PHMB; however, like all guanidine derivatives, avoid contact with eyes in concentrated form.


Your Skin

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

Our Assessment

Valuable

A highly precise and stable antimicrobial that offers medical-grade efficacy against pathogens while remaining gentle on the skin barrier.


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References