WATER
Solvent
Excellent
CAS Number: 7732-18-5
About WATER
Just water — the most common cosmetic ingredient and the safest thing you'll find on any label.
Detailed Analysis
Water (H₂O, CAS 7732-18-5) is the most widely used cosmetic ingredient, serving as the primary solvent and vehicle in the vast majority of skincare, haircare, and personal care formulations. Purified or deionized water is used to ensure absence of contaminants. It functions as a solvent for water-soluble ingredients, a diluent, and contributes to product texture and spreadability. No safety concerns whatsoever for topical application.
What It Does
Skin Benefits
- ✓ Universal solvent for cosmetic formulations
- ✓ Essential for skin hydration
- ✓ Enables delivery of water-soluble active ingredients
Safety Score
Excellent
Based on EU regulatory data, published safety research, and ingredient function analysis.
References
EU CosIng Database
European Commission cosmetic ingredient registry
PubChem
National Library of Medicine compound data
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Download LuxSenseThis information is for educational purposes only and does not constitute medical advice. Always consult a healthcare professional for skin concerns or allergies.