Water is the most common ingredient in skincare formulations, serving as a solvent and carrier that dissolves water-soluble ingredients and forms the base of emulsions. It is physiologically inert and well-tolerated on skin.
| Reported effect | How often | Notes |
|---|---|---|
Irritation or dryness from excessive washing | Rare | Related to overexposure or impurities rather than water itself; prolonged wet contact can disrupt the skin barrier. |
Allergic or sensitivity reaction | Very rare | Pure water is non-allergenic; reactions are attributable to contaminants or other formulation components. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.