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SMITHSONITE.

Valuable CAS 3486-35-9 / 14476-25-6 / ASTRINGENT

Smithsonite Extract, rich in zinc carbonate, is a multifunctional ingredient known for enhancing skin elasticity and hydration. It offers antioxidant protection against environmental aggressors while supporting the skin's natural repair processes and soothing irritation.

Antioxidant Skin-Conditioning Anti-inflammatory Moisturizing Collagen Boosting Sebum Regulation Skin Tone Evening Skin Repair Protective

Science

This extract, abundant in zinc carbonate, actively stimulates collagen synthesis, thereby enhancing skin elasticity. It functions as a potent antioxidant, neutralizing free radicals to mitigate oxidative stress and signs of premature aging. Furthermore, Smithsonite Extract aids the skin's innate repair mechanisms, promoting regeneration and healing, and demonstrates anti-inflammatory properties to soothe stressed or irritated skin. Its benefits extend to improving hydration, regulating sebum production, and contributing to a more even skin tone by reducing hyperpigmentation.


Research

Medium confidence
Effective range 0.0001–10%
Optimal

N/A

Key findings

  1. 01 Clinical application within a cosmetic composition demonstrated that Smithsonite extract, used between 0.0001% and 10.0% by weight, effectively protects skin from external irritation and provides significant moisturizing benefits. Optimal efficacy was observed at concentrations ranging from 0.001% to 5.0%. Concentrations below 0.0001% showed diminished protective effects, while those exceeding 10% risked compromising formulation stability and aesthetic feel.

Transparency

Not commonly dusted

The Formula

Solubility
Unknown
Optimal pH 6 – 7.5
0 7 14

Stability

Smithsonite Extract maintains stability across a broad range of cosmetic formulations under normal conditions. It is dispersible in most formulations despite being insoluble in water. The ideal pH for formulations containing this ingredient is approximately 6.0 to 7.5 (for a 10% solution). Formulators should avoid strong acids and alkalis.

Conflicts

  • strong acids
  • strong alkalis
  • potential for phase separation, unexpected changes in color, texture, or odor, sediment formation, precipitation, or oxidation if incompatible with other ingredients.

Safety

CIR Status
Not reviewed
Sensitization risk Unknown

The Cosmetic Ingredient Review (CIR) has not specifically evaluated Smithsonite or its extract. However, it is generally considered a gentle, natural ingredient, with no known irritancy or comedogenicity based on available data.


Your Skin

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Unknown
Comedogenicity Unknown

Our Assessment

Valuable

Smithsonite is a valuable mineral extract, rich in zinc carbonate, that offers broad skin benefits from enhancing elasticity and hydration to providing antioxidant and soothing properties, making it suitable for diverse skin types and product categories.


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