Skin probiotic
CUTIBACTERIUM ACNES DEFENDENS XYCM42
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
A specific protective subspecies of Cutibacterium acnes used as a topical skin probiotic. Clinical work links it to calmer redness, improved texture and a healthier skin microbiome in cosmetic use.
Skin benefits
- Skin probiotic strain from the defendens subspecies, considered protective rather than acnegenic
- Clinical work shows reduced erythema, improved texture and sebum regulation
- Safety evaluation in acne-prone individuals reported tolerable use
- Supports the resident skin microbiome and helps outcompete pathogenic strains
Known concerns
- Live-culture cosmetics need cold chain and stability controls
- Long-term effects on skin microbiome composition are still being characterised
- Strain-specific data; benefits should not be generalised to all C. acnes products
- Not suitable for use on broken or immunocompromised skin without medical advice
References
EU CosIng database
European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.
Same plant / compound family
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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve, so always read the physical product label and consult a healthcare professional for personal concerns.