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ALUMINUM ACETATE.

Valuable CAS 139-12-8 / ANTIMICROBIAL, ASTRINGENT

Aluminum acetate is an FDA-recognized topical astringent known for relieving minor skin irritations, itching, and inflammation. It effectively dries and hardens skin to protect against external factors.

astringent soothing antimicrobial

Science

It functions by mildly coagulating skin proteins, constricting tissues, and drawing water via osmotic flow. This action reduces swelling, irritation, and discharge from weeping lesions.


Research

High confidence
Effective range 0.13–0.5%
Optimal

N/A

Key findings

  1. 01 The FDA recognizes 0.13% - 0.5% aluminum acetate as Generally Recognized as Safe and Effective (GRASE) for OTC topical astringent use against minor skin irritations.
  2. 02 Higher concentrations, such as 13% in Burow's solution, have demonstrated efficacy in reducing bacterial discharge, including MRSA, in ear solutions.

Transparency

Not commonly dusted

The Formula

Solubility
Water
Optimal pH 2 – 7
0 7 14

Stability

Aqueous solutions are generally unstable, prone to decomposition and sediment formation. Stabilization is often achieved with alpha-hydroxy carboxylic acids or boric acid.

Conflicts

  • Alkali metal hydroxides
  • Carbonates
  • Phosphates
  • Heavy metal salts
  • Strong oxidizing agents

Safety

CIR Status
Not reviewed
Max tested
0.5%
Sensitization risk Low

The FDA limits topical OTC astringent concentrations to 0.13-0.5%. While CIR has not specifically reviewed aluminum acetate, related aluminum compounds have been evaluated.


Your Skin

Yes Normal
No Dry
Yes Oily
No Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Valuable

Aluminum acetate is a valuable astringent, FDA-recognized for its efficacy in soothing minor skin irritations and managing excess oil without causing significant irritation.


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