Magnesium sulfate is an inorganic salt used in cosmetic formulations primarily as an emulsion stabilizer, viscosity controller, and bulking agent, particularly in water-in-oil systems. It is generally considered safe and well tolerated in topical skincare products.
| Reported effect | How often | Notes |
|---|---|---|
Mild skin irritation or dryness | Rare | Occasional transient irritation, more likely with high concentrations or compromised skin barriers. |
Contact dermatitis or allergic reaction | Very rare | Isolated reports; sensitization to the salt itself is uncommon. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.