Potassium hydroxide

Potassium Hydroxide is a strong alkaline compound commonly used in cosmetics as a pH adjuster, neutralizing agent, and saponification agent in liquid soap making. It is a white solid that easily dissolves in water, creating a highly alkaline solution. In soap formulations, Potassium Hydroxide reacts with oils and butters to produce soft or liquid soaps, leaving no residue when fully saponified.

INCI Name:

Potassium Hydroxide

Functions & Benefits:

• pH Adjuster – Stabilizes product pH to ensure safety and effectiveness.
• Saponification Agent – Essential for making liquid soaps and certain shaving creams.
• Neutralizing Agent – Used to activate or balance specific cosmetic ingredients.

Usage Rate:

In pH adjustment: <1% in final product (as required to balance pH).

In soap making: Amount depends on lye calculation based on oil weight and recipe.

pH Compatibility:

Stable and functional in alkaline formulations (pH 8 – 13).

Solubility:

Highly soluble in water (exothermic reaction – releases heat).

Insoluble in oils.

Compatibility:

Works in liquid soaps, shaving products, and pH adjustment systems.

Must be handled carefully; not compatible with strong acids unless neutralization is intended.

Storage:

Store in a cool, dry place, tightly sealed. Avoid contact with moisture and air.

⚠ Safety Note: Potassium Hydroxide is highly caustic in raw form. Always handle with protective gloves and goggles. Use only in properly calculated amounts.