Magnesium Sulfate

Magnesium sulfate is an inorganic, water-soluble salt, commonly known as Epsom salt, that dissociates into magnesium and sulfate ions. Cosmetics use it to adjust viscosity, firm up texture, and give formulas a clean, mineral finish.
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Ingredient Snapshot

Overview
Epsom salt used to adjust texture and give formulas a clean finish.
Category
Skin Conditioning
Type
Rheology Modifier

Ingredient Ratings

Overall Rating

Fair

Comedogenic Risk

None

Skin Benefits

Improves glide and provides a light, non-greasy afterfeel, though direct skin benefits are minimal; it mainly refines how a formula spreads and rinses.

Uses In Skincare & Cosmetics

Used in bath soaks, body scrubs, and clay masks to add body and aid rinse-off. Also included in lotions to fine-tune thickness and skin feel.

Comedogenic Rating

This ingredient is not typically evaluated for comedogenicity, and no standardized rating is available.

Safety

Generally safe in rinse-off and low-level leave-on products, but may cause transient dryness or stinging on irritated or eczematous skin. Avoid use on broken skin.

Is Magnesium Sulfate a Good Ingredient?

This is chiefly a texture and viscosity salt with limited direct skin benefits, which keeps it at Fair; at higher levels it can be drying or sting compromised skin.

Products with Magnesium Sulfate

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