Science
Mechanism of Action
Utilizing an immense surface area of approximately 3,000 m2/g, it operates through adsorption rather than absorption. Its negatively charged surface (especially at a pH above 4.3) binds to positively charged toxins, heavy metals, and sebum, physically lifting them from the skin's surface and follicular openings.
Research
Clinical Evidence
Medium confidence4%
Key findings
- 01 In vitro analysis demonstrated that a 0.5% concentration can inhibit over 50% of Pseudomonas aeruginosa biofilm growth.
- 02 Clinical reviews indicate a lack of robust evidence for direct acne treatment, though its efficacy in wound management via toxin adsorption is well-documented.
Transparency
Dusting Analysis
Often included at 'label-claim' levels (below 0.1%) for visual aesthetic or marketing appeal; however, functional adsorption and antibiofilm activity typically require concentrations between 0.5% and 4%.
The Formula
Formulation
Stability
Chemically inert and stable across a broad pH range. To maximize its ability to attract cations, the formulation should ideally be kept above its Point of Zero Charge (pH 4.3).
Synergies
- Kaolin Clay
- Bentonite
- Salicylic Acid
Conflicts
- Strong oxidizing agents
- Chlorates
- Nitrates
- Permanganates
Safety
Safety Profile
While considered safe for topical application, it is not currently FDA-approved as a colorant in cosmetics.
Your Skin
Skin Compatibility
Our Assessment
Verdict
A highly effective physical decontaminant and mattifier for oily and congested skin types, though its therapeutic claims for acne remain clinically unproven.
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References
Sources