Diatomaceous earth, a naturally occurring soft sedimentary rock, has been gaining attention for its potential to promote oral health when used in toothpaste. Composed primarily of silica, diatomaceous earth offers gentle abrasive properties, making it an effective yet non-damaging ingredient to support plaque removal and stain reduction. Its mild abrasive action can leave teeth feeling cleaner and smoother without harming enamel, which is essential for long-term dental health. Additionally, diatomaceous earth may help neutralise harmful bacteria in the mouth, reducing the risk of oral issues such as cavities, bad breath, and gum disease. As a natural and eco-friendly ingredient, it is increasingly being included in toothpaste formulations, appealing to those seeking sustainable alternatives for their oral health care routine. However, while it has notable benefits, it’s important to use diatomaceous earth that is labelled as food grade to ensure it is safe and free from harmful impurities.