Magnesium Sulfate Heptahydrate (Epsom salt) is a mineral salt used in skincare primarily to stabilize water-in-oil emulsions and adjust the consistency of formulations. It also acts as a mild exfoliant and is used in bath soaks for its osmotic, soothing properties.
| Reported effect | How often | Notes |
|---|---|---|
Skin dryness | Uncommon | High concentrations or prolonged soaks may draw moisture from the skin. |
Mild skin irritation or stinging | Uncommon | More likely on broken or sensitized skin. |
Contact dermatitis / allergic reaction | Rare | Sensitivity to the salt is infrequently reported. |
Mechanical irritation from undissolved crystals | Rare | Coarse grains used as exfoliant may abrade skin. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.