Skin Conditioning
NITROSOMONAS EUTROPHA
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A live ammonia-oxidising soil bacterium marketed in microbiome sprays. Novel concept; independent safety and efficacy evidence is thin.
Nitrosomonas eutropha is a chemolithoautotrophic ammonia-oxidising bacterium naturally found in soil and freshwater. It is marketed as a live topical ingredient (most notably by AOBiome / Mother Dirt) intended to metabolise ammonia on skin to nitrite and nitric oxide. As a live, non-pathogenic bacterium, product preservation is paradoxical — conventional preservatives would kill the active organism. There is no CIR monograph and EU cosmetic regulators treat live bacteria cautiously (live microorganisms are generally not classified as cosmetic ingredients under EU Regulation 1223/2009 without specific risk assessment). Published human efficacy data remain limited.
Function
Skin benefits
- Ammonia-oxidising bacterium claimed to support skin nitric-oxide pathways
- Microbiome-friendly positioning
- Novel biotech ingredient
Known concerns
- Live-bacterial product — preservation and pH constraints
- Very limited independent safety dossier
- Hypothetical nitrite formation in specific conditions
- Novel ingredient — regulatory posture still evolving
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
Related skin conditionings
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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.