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Silicon Dioxide

Approved Ingredients
Silicon Dioxide

Silicon Dioxide

Silicon dioxide, also known as silica, is a white, odourless, and tasteless powder that can be used as an abrasive and thickening agent in toothpaste tablets. It is derived from natural sources, such as quartz or sand, through a process of purification and refinement.

In toothpaste tablets, silicon dioxide helps to remove plaque and stains from the teeth, while also improving the texture and viscosity of the toothpaste. It also helps to prevent the toothpaste from drying out or hardening over time.

Silicon dioxide is biodegradable and is also approved for use in food products by regulatory agencies around the world. When combined with other ingredients, such as baking soda, and essential oils, this ingredient helps to create a gentle and effective toothpaste that promotes oral health and sustainability.


Vranić, E., Lacević, A., Mehmedagić, A., & Uzunović, A. (2004). Formulation ingredients for toothpastes and mouthwashes. Bosnian journal of basic medical sciences, 4(4), 51–58.

United States Food & Drug Administration (FDA). Food for Human Consumption: Silicon Dioxide. 21CFR172.480

National Center for Biotechnology Information (2023). PubChem Compound Summary for CID 24261, Silicon Dioxide.

INCI Name:
Silicon Dioxide
Ingredient origins:
Quartz Sand
Common name:
EWG score: The EWG score is a hazard score ranging from 1-2 (low hazard), 3-6 (moderate hazard) and 7-10 (high hazard) published by the Environmental Working Group. Their data is sourced from the Skin Deep® database and studies published in open scientific literature.
1 - 3 (depends on usage)