Sodium Lactate: Powerful Natural Humectant for Skin Care & Soap Formulations
Sodium Lactate, a sodium salt of lactic acid, naturally occurs in the skin’s Natural Moisturizing Factor (NMF) and acts as an excellent humectant. It's commonly used in skincare and soap products due to its ability to hold moisture better than glycerin. This versatile ingredient improves hydration, boosts skin barrier function, and mildly exfoliates. In soap formulations, it enhances hardness, helps with unmolding, and increases moisture retention in bars.
Key Benefits:
- Moisturizing: Sodium Lactate draws and retains moisture, improving hydration without a sticky feel.
- Non-sticky Hydration: Holds moisture in the skin better than many other humectants like glycerin.
- Improves Skin Texture: Stimulates ceramide synthesis and enhances skin elasticity while acting as a mild AHA for slight exfoliation and skin-brightening effects.
- Soap Hardening: Used in cold-process soaps, it hardens the bars, making them more durable, reducing cracking, and retaining moisture for longer-lasting use.
This is a 60% solution of sodium lactate and 40% water.
Ingredients (Common Name): Sodium Lactate
Ingredients (INCI Name): Sodium Lactate
Appearance: Clear, colorless liquid
pH Range: 6.5 - 8.5
Country of Origin: USA
Suggested Uses for Sodium Lactate
- Cold Process Soap Making: At a recommended usage rate of 1-3% of total oils, Sodium Lactate helps harden the soap, enhances unmolding, and improves bar longevity. Add to cooled lye water for best results. For example, using 1 teaspoon of Sodium Lactate per pound of oils will ensure easy unmolding and reduce cracking.
- Skincare Formulations: Can be used at 0.5-5% in lotions, creams, and other water-based products to improve moisture retention and skin feel.
- Body Butters & Lotions: Boosts moisture content and helps skin maintain softness and hydration.
Usage Rate:
- Cold Process Soap: 1-3% of total oils.
- Skincare Products: 0.5-5%, depending on the formulation.
Safety and Storage:
- Storage: Keep in a cool, dry place, away from direct sunlight and moisture. Close tightly to maintain effectiveness.
- Safety Note: For external use only. Perform a patch test before use. Avoid contact with eyes. Pregnant or nursing individuals should consult a healthcare provider before use.
