STREPTOCOCCUS ORALIS
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A commensal oral bacterium — the same species naturally found in the human mouth — being explored in oral care formulations for its ability to outcompete harmful plaque-forming bacteria.
Streptococcus oralis is a Gram-positive, alpha-hemolytic streptococcus and a predominant member of the normal human oral microbiota, colonizing the oral cavity, pharynx, and upper respiratory tract. It is part of the viridans group streptococci and plays a generally beneficial role in oral ecology by occupying ecological niches that might otherwise be colonized by more pathogenic organisms. S. oralis can inhibit growth of Streptococcus mutans and other caries-associated bacteria through direct competition, bacteriocin production, and pH modulation. In cosmetic and oral care contexts, it may be used as a probiotic agent to support microbial balance in the oral cavity. The skin conditioning function listed suggests exploration of topical applications for the skin microbiome.
Function
Skin benefits
- May support healthy skin/oral microbiome balance
- Potential anti-plaque activity through bacterial competition
- Probiotic approach to maintaining microbial homeostasis
Known concerns
- Live bacterial culture — requires careful preservation and contamination control
- Potential for bacteremia if used on broken skin or mucous membranes
- Regulatory classification as a microorganism in cosmetics may be restricted in some regions
- Insufficient long-term safety data for chronic topical use
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
Check your shelf
Find STREPTOCOCCUS ORALIS in your products.
Scan any cosmetic product with LuxSense to see if it contains STREPTOCOCCUS ORALIS and get a full ingredient breakdown with safety scores.
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.