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ALUMINUM BENZOATE.

Valuable CAS 555-32-8 / ANTIMICROBIAL, VISCOSITY CONTROLLING

Aluminum Benzoate functions primarily as a rheology modifier and secondary preservative, enhancing formula stability and texture. A clinical study indicates its potential to reduce wrinkles and improve hydration without irritation at low concentrations.

viscosity controlling antimicrobial/antibacterial preservative astringent

Science

This ingredient primarily controls viscosity and acts as a mild antimicrobial and preservative, especially in anhydrous systems where it boosts hardness. On skin, it offers subtle astringent benefits and pH buffering.


Research

Medium confidence
Effective range N/A
Optimal

0.1%

Key findings

  1. 01 A multi-active serum containing 0.1% Aluminum Benzoate demonstrated significant wrinkle reduction and improved hydration over 12 weeks with no observed skin irritation.

Transparency

Not commonly dusted

The Formula

Solubility
Oil
Optimal pH 4 – 7
0 7 14

Stability

Insoluble in water, it disperses in oil phases or anhydrous systems, remaining stable. It is most effective as a preservative in slightly acidic to neutral environments.

Conflicts

  • Strong oxidizing agents
  • Anionic surfactants
  • Highly alkaline environments

Safety

CIR Status
Safe as used
Max tested
1%
Sensitization risk Low

Reviewed as part of aluminum salts, it is restricted to 1% total benzoates in Japan. The FDA considers it safe for non-inhalable cosmetic use.


Your Skin

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

Our Assessment

Valuable

Aluminum Benzoate is a valuable multi-functional ingredient that enhances formula stability and texture while offering mild skin benefits and a low-risk profile.


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References