Potassium Sulfate

Potassium Sulfate is an inorganic mineral salt of potassium and sulfate ions, readily soluble in water. It's used to adjust ionic strength, influence texture, and support viscosity or gel behavior in water-based formulas.
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Snapshot

Overview
A mineral salt that helps control texture and consistency in formulas.
Category
Tone/Texture
Type
Thickener

Ratings

Overall Rating

Good

Comedogenic Risk

None

Not typically evaluated for comedogenicity — no standardized rating available.

Is Potassium Sulfate a Good Ingredient?

It's an inert mineral salt that helps tune ionic strength and viscosity for smoother textures without heaviness, with a low likelihood of irritation, solid enough for a Good rating. It's useful for fine-tuning feel and stability in watery and gel systems.

Skin Benefits

Improves consistency for a smoother application and more uniform feel. Aids in maintaining formula body without heaviness.

Uses in Skincare & Cosmetics

Used in watery formats like toners, essences, and mists to fine-tune thickness. Also appears in gel moisturizers and rinse-off masks for textural control.

Safety

Considered low risk; typically non-sensitizing and non-comedogenic. High concentrations may cause transient stinging if it contacts eyes or very sensitive skin.