Science
Mechanism of Action
It functions by promoting the contraction of skin cells, providing astringent, adsorbent, and protective qualities. Its mild antimicrobial properties further aid in soothing and healing minor skin irritations and wounds.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
This ingredient has a history of use in dusting powders for treating indolent, moist, or suppurating lesions.
The Formula
Formulation
Stability
A white, slightly hygroscopic powder, Bismuth Subnitrate is practically insoluble in water and ethanol. No specific optimal pH range for stability in cosmetic formulations was identified.
Conflicts
- alkaline bicarbonates
- soluble iodides
- gallic acid
- calomel
- salicylic acid
- tannin
- sulfur
Safety
Safety Profile
The safety profile is generally favorable, with minimal absorption and virtually no toxicity. While FDA-approved for oral antacids, some reports indicate potential skin/eye irritation, though it generally does not meet GHS hazard criteria.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Bismuth Subnitrate is a valuable ingredient for soothing and protecting irritated skin, offering astringent and healing properties for sensitive and acne-prone concerns.
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