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ALUMINUM METHIONATE.

Optional CAS 52667-15-9 / VISCOSITY CONTROLLING

Aluminum Methionate is a multi-functional ingredient primarily valued for its astringent and viscosity-controlling properties in cosmetic formulations. Historically, it has also been researched for its role in antiperspirants.

viscosity controlling astringent antiperspirant

Science

It functions by contracting skin tissues, delivering an astringent effect, and may influence membrane permeability. In antiperspirant contexts, it likely forms temporary plugs within sweat ducts to reduce perspiration.


Research

Low confidence
Effective range 1–20%
Optimal

N/A

Key findings

  1. 01 Demonstrated low to no skin irritation in patch tests at concentrations up to 20%.
  2. 02 Investigated for its effect on membrane permeability in animal and human skin models.

Transparency

Not commonly dusted

Though not specified as commonly dusted, inhalation poses a risk as it is noted as a sensitizing asthmagen; formulations must ensure it is non-inhalable.


The Formula

Solubility
Water
Optimal pH 3.5 – 6.5
0 7 14

Stability

Aqueous solutions are generally more stable than basic aluminum salts. Often formulated in hydroalcoholic or gel systems for enhanced stability.

Conflicts

  • Metal ions (forms complexes)
  • Strongly alkaline ingredients
  • Anionic surfactants (may cause precipitation)

Safety

CIR Status
Not reviewed
Max tested
20%
Sensitization risk Low

While patch tests show low to no skin irritation, it is noted as a sensitizing asthmagen if inhaled. Rigorous formulation to prevent inhalation is critical.


Your Skin

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

Our Assessment

Optional

Aluminum Methionate is an optional ingredient valuable for targeted astringency and viscosity control, provided strict formulation ensures non-inhalation to mitigate respiratory risks.


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