Deionized/Demineralized Water
Reviewed by Kate · Last updated 18 Aug 2026
Also known as: Purified Water, Water, Aqua/Water/Eau
Filtered water used in cosmetics
Addresses
EWG Safety Score
What Is Deionized/Demineralized Water?
Filtered water used in cosmetics. All water used in cosmetic formulations goes through this process to remove components that could interfere with a product’s stability and performance.
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1,2-Hexanediol
Synthetic multi-tasking ingredient
1,2-Hexanediol
Synthetic multi-tasking ingredient | Works as a preservative, solvent, humectant, and texture enhancer
1,5-Pentanediol
A solvent and penetration enhancer that helps active ingredients reach deeper skin layers
Acetone
A volatile solvent used to denature or dissolve other ingredients in skincare formulations
Ascophyllum Nodosum
Type of cold water brown seaweed | Has antioxidant properties and serves as a texture enhancer
Avena Sativa Seed Water
A plant-derived solvent that hydrates and soothes irritated skin
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