Overview
A family name for silica materials whose crystalline form, particle properties, and manufacturing route matter to function and safety.
Source, harvesting, or manufacture
Silica may be mineral-derived or synthetically manufactured. Cosmetic specifications often distinguish amorphous forms from crystalline silica.
Chemistry and composition
All forms share the formula SiO₂, but atomic arrangement and particle characteristics differ. Those differences are material to hazard and cosmetic-use assessment.
Scientific research
Formulation function is distinct from a health benefit. Safety conclusions for synthetic amorphous silica should not be generalized to every silica form or respirable powder exposure.
Evidence labels apply to the specific bathing claim summarized here. They do not grade every possible use of the material.
Traditional use
Silica-rich minerals have broad material histories, but the modern cosmetic ingredient is defined by its grade and specification.
Bathing relevance
In dry formulations, an appropriate cosmetic-grade amorphous silica may serve as an anti-caking, absorbent, bulking, or flow-control ingredient rather than a headline bath active.
Relaxation and sensory experience
Fine, white, odorless, and generally visually unobtrusive at low use levels.
Comparisons
- It behaves as an insoluble particulate rather than a dissolving bath salt.
- Its formula alone does not specify particle form or manufacturing route.
Practical use
Confirm the exact INCI identity, amorphous or crystalline form, particle-size distribution, use level, and dust controls.
Safety
Minimize inhalation of dry powder. Finished-product assessment must distinguish cosmetic-grade amorphous silica from crystalline or respirable forms not covered by the same conclusion.
General educational information only. Finished-product concentration, contaminants, allergens, interactions, packaging, and label directions govern real-world use.
Frequently asked questions
Does this page mean Silicon dioxide is in Low Tide?
No. The library deliberately covers a broader historical formulation universe. Only a reconciled, owner-approved ingredient statement can establish product inclusion.
Does traditional use prove a health benefit?
No. It documents how people used or understood a material; clinical evidence is a separate question.
References
- Silica. National Library of Medicine, PubChem.
- Amended Safety Assessment of Amorphous Silica and Synthetically-Manufactured Amorphous Silicates as Used in Cosmetics. Cosmetic Ingredient Review.