Silica

CAS: 7631-86-9 | Synonyms: Silicon Dioxide, Amorphous Silica, Synthetic Amorphous Silica +2

Safer alternative: Talc

Toxicity Score

2 /10
Lower Risk

Primary Concern

Under review

Found In

Face Powders, Foundations, Lipsticks

Persona Risk

Medium Risk for Chronic & Autoimmune

Put Simply

Silica is an ingredient that helps keep powders smooth and prevents products from clumping together. It's generally safe to use on your skin, so you don't need to worry about it in your makeup or toothpaste. Just be cautious if you ever come across it in a dust form, as breathing it in can be harmful, but that's not something you'd usually encounter in cosmetic products.

Clinical Summary

Silica is commonly used in cosmetics as an anti-caking agent and absorbent. It is generally considered safe for topical use, with no significant health risks when used in product formulations designed for external application. Inhalation of crystalline silica, however, is known to be hazardous, but this form is typically not used in cosmetic products.

What This Score Means

Lower Risk. This ingredient scores 2/10. Generally considered safer, though individual sensitivities may vary. Always check with your healthcare provider for specific concerns.

Regulatory Status

Cross-referenced safety assessments from regulatory bodies

Organization
Rating
Concern
EWG
1
Overall low hazard for topical use
ECHA
Not classified
No significant hazard identified for cosmetic use

Also Listed On Labels As

Silicon Dioxide Amorphous Silica Synthetic Amorphous Silica Fumed Silica Hydrated Silica

Risk by Health Profile

Chronic & Autoimmune Medium Risk

Prolonged inhalation of crystalline silica dust can lead to lung disease, but this form is not used in cosmetics.

Skin & Allergy Low Risk

Topical use in cosmetics rarely causes skin irritation or sensitivity.

Frequently Asked Questions

Sources & Citations

  1. [1]
    EWG Skin Deep (CAS: 7631-86-9)
  2. [2]
  3. [3]
    ECHA (EC Number: 231-545-4)

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