Triclosan is an effective antimicrobial but has raised safety and environmental concerns, leading to restricted use in many regions.
Irritation
low
Source
synthetic
Beauty ingredient research
Browse the review database to understand what an ingredient is, what it does in a beauty formula, when it is useful, and when it deserves caution across skincare, haircare, bodycare, makeup, and more.
20769
Reviewed ingredients
524
Low-concern standouts
2884
Need usage caution
Triclosan is an effective antimicrobial but has raised safety and environmental concerns, leading to restricted use in many regions.
Irritation
low
Source
synthetic
An effective preservative booster that helps keep products fresh, but may cause irritation for sensitive skin at higher concentrations.
Irritation
moderate
Source
synthetic
A gentle synthetic preservative booster that helps keep your products fresh without the harshness of traditional preservatives.
Irritation
low
Source
synthetic
An effective preservative that works by releasing tiny amounts of formaldehyde, making it a controversial choice for sensitive skin.
Irritation
moderate
Source
synthetic
Zinc borate is a synthetic preservative with antimicrobial properties, but its use in skincare is limited and may cause irritation for sensitive skin.
Irritation
moderate
Source
synthetic
Zinc nitrate is a synthetic preservative and astringent that can help control bacteria and reduce oil, but it may be drying or irritating for sensitive skin.
Irritation
moderate
Source
synthetic