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ALUMINUM PHENOLSULFONATE.

Valuable CAS 1300-35-2 / ANTIMICROBIAL, ASTRINGENT, DEODORANT

Aluminum Phenolsulfonate is a multi-functional compound employed in skincare for its astringent and antimicrobial properties. It effectively reduces body odor and can temporarily constrict pores, making it valuable for oil and sweat management.

antimicrobial astringent deodorant

Science

It acts as an astringent by precipitating surface proteins, leading to a temporary tissue contraction that can reduce secretions and constrict pores. Concurrently, its antimicrobial action inhibits the proliferation of odor-causing bacteria on the skin surface.


Research

High confidence
Effective range 0.01–5%
Optimal

N/A

Key findings

  1. 01 Historically used at 10.0% for effective antimicrobial and astringent action in deodorant formulations.
  2. 02 Cited in patent-backed formulations (0.01%-5.0%) as a functional antiperspirant and body-odor inhibitory agent.

Transparency

Not commonly dusted

The Formula

Solubility
Water
Optimal pH 3 – 4
0 7 14

Stability

Most stable in acidic environments; formulations typically target a pH around 3.85. High alkalinity may cause aluminum precipitation.

Conflicts

  • Strongly alkaline materials
  • Anionic surfactants
  • Strong oxidizers

Safety

CIR Status
Not reviewed
Max tested
6.25%
Sensitization risk Low

While not specifically reviewed by CIR, the SCCS (EU) considers aluminum compounds safe up to 6.25% Al equivalent in non-spray deodorants. It must not be inhalable due to potential asthmagen risk.


Your Skin

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

Our Assessment

Valuable

An effective astringent and antimicrobial agent primarily suited for managing excess oil and body odor in appropriate formulations.


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