Potassium Iodide is an inorganic potassium salt of iodide. It's used in topical products as a mineral salt and skin-conditioning component or stabilizer, with its use depending on formulation needs and sensitivity considerations.
A mineral salt used to condition skin and stabilize formulas.
Category
Skin Conditioning
Type
Mineral
Ratings
Overall Rating
Poor
Comedogenic Risk
None
Not typically evaluated for comedogenicity — no standardized rating available.
Our take
Is Potassium Iodide a Good Ingredient?
Poor rating because cosmetic benefits are modest and evidence for topical efficacy is limited, while some individuals may experience irritation or acneiform breakouts from iodides.
What it does
Skin Benefits
Provides modest skin-conditioning support and may assist with formula stability, though cosmetic benefits are limited. Individuals prone to sensitivity should use caution.
Where you'll find it
Uses in Skincare & Cosmetics
Occasionally included in lotions, gels, or emulsions where a mineral salt component is desired, typically at low levels.
Before you use it
Safety
Irritation Risk: May trigger sensitivity or blemish-like eruptions in some users, particularly acne-prone skin. Typically used at low levels; avoid use on compromised skin and discontinue if irritation develops.