A fluoride compound that helps prevent cavities and reduce tooth sensitivity, commonly used in toothpaste and mouthwash.
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
A fluoride compound that helps prevent cavities and reduce tooth sensitivity, commonly used in toothpaste and mouthwash.
Irritation
low
Source
synthetic
Olaflur is a well-studied fluoride ingredient that helps prevent tooth decay by strengthening enamel and reducing acid damage.
Irritation
low
Source
synthetic
Stannous fluoride is a well-researched anti-cavity ingredient that strengthens enamel and helps reduce tooth sensitivity, but it is not typically used in skincare.
Irritation
low
Source
synthetic