INCI · other · CIR review pending · used in 2 products
Glacier Water
Water (INCI: Aqua) is H2O with CAS # 7732-18-5. It is the most common skincare ingredient and typically appears first on ingredient lists, indicating it is the largest component by volume. In cosmetics, it is used in purified and deionized form to improve product stability by removing mineral ions.
Evidence level
strongEWG score
—Comedogenic
—Category
other● Benefits
Water primarily functions as a solvent, dissolving ingredients that do not disperse in oils. Once incorporated into a formulation, it contributes to hydration within the skin, though applying pure water topically can actually be drying.
hydrating
● Cautions
Applying pure water directly to skin (e.g., prolonged baths) can be drying rather than hydrating.
