Potassium hydroxide is a strong alkaline compound used in cosmetics to adjust pH and to saponify fatty acids in the production of liquid soaps and cleansers. At regulated low concentrations in finished products it is considered safe, functioning as a formulation aid rather than an active treatment.
| Reported effect | How often | Notes |
|---|---|---|
Skin irritation | Common | More likely with high-pH or poorly buffered formulations, especially on sensitive skin. |
Dryness or tightness | Common | Can disrupt the skin barrier and strip natural oils with frequent use. |
Chemical burns | Rare | Occurs primarily with concentrated raw material or improper formulation, not in finished consumer products. |
Allergic contact dermatitis | Rare | Uncommon since it is largely neutralized in finished products. |
Eye irritation or injury | Uncommon | Risk with accidental contact, particularly with cleansers near the eye area. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.