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ALUMINUM PCA.

Valuable CAS 59792-81-3 / ASTRINGENT, SKIN CONDITIONING

Aluminum PCA is a multifunctional ingredient lauded for its ability to regulate sebum production and exhibit antimicrobial properties. It also supports skin hydration, making it a well-tolerated choice for blemish-prone and sensitive skin.

astringent sebum regulator humectant antimicrobial

Science

Its dual mechanism involves the aluminum ion providing astringent and antimicrobial action, specifically inhibiting 5α-reductase to reduce sebum. Concurrently, the PCA component acts as an NMF, enhancing skin hydration and mitigating potential irritation.


Research

High confidence
Effective range 0.5–1%
Optimal

1%

Key findings

  1. 01 A 1.0% concentration demonstrated a significant reduction in sebum secretion rates through 5α-reductase inhibition.
  2. 02 Effective at 0.5%-1.0% for reducing underarm odor by inhibiting bacterial growth, showing good tolerance in sensitive skin.

Transparency

Not commonly dusted

The Formula

Solubility
Water
Optimal pH 4 – 6
0 7 14

Stability

Optimal stability occurs within a slightly acidic pH range of 4.0-6.0. Higher pH values (>7) can lead to aluminum hydroxide precipitation, affecting efficacy and clarity.

Conflicts

  • Anionic surfactants
  • Strongly alkaline ingredients
  • Phosphate buffers
  • EDTA

Safety

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

Evaluated as safe for cosmetic use, it offers a high-tolerance alternative to other aluminum salts like aluminum chloride.


Your Skin

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

Our Assessment

Valuable

Aluminum PCA is a valuable ingredient for managing oily, acne-prone, and sensitive skin due to its effective sebum regulation, antimicrobial action, and hydrating properties.


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References