Sodium PCA (Na-PCA) Humectant

Sodium PCA – Natural Moisturizing Factor for Skin and Hair Care

Basic Information

• INCI Name: Sodium PCA

• Chemical Name: Sodium L-pyroglutamate

• CAS Number: 28874-51-3

• Appearance: Clear to slightly yellowish liquid (typically as 50% aqueous solution)

• Solubility: Soluble in water and ethanol; insoluble in oils

• Humectancy: Highly hygroscopic – absorbs moisture from the air

Overview
Sodium PCA is the sodium salt of pyrrolidone carboxylic acid (PCA), a naturally occurring component of the skin's Natural Moisturizing Factor (NMF). It is one of the most effective humectants available, with superior moisture‑binding properties that help maintain healthy, hydrated skin and hair. Sodium PCA is non‑irritating, non‑comedogenic, and safe for use at high concentrations (up to 50%), making it suitable for a wide range of personal care formulations.

Key Benefits

• Powerful humectant: Absorbs and retains moisture more effectively than glycerin, sorbitol, and propylene glycol (1.5× more than glycerin, 2× more than propylene glycol, and 6× more than sorbitol under the same conditions).

• Natural origin: Part of the skin's own NMF, providing biocompatible hydration.

• Non‑irritating: Safe for sensitive skin and eyes; non‑allergenic and non‑photo‑toxic.

• Non‑comedogenic: Does not clog pores.

• Rapidly biodegradable: Environmentally friendly.

• Imparts a smooth, moist feel to skin and hair.

Applications

• Skin care: Moisturizers, creams, lotions, serums, and facial gels – provides deep hydration and improves skin elasticity.

• Hair care: Shampoos, conditioners, and styling products – adds moisture, improves manageability, and reduces dryness.

• Color cosmetics: Foundations, lipsticks, and concealers – enhances application and skin feel.

• Sunscreens: Improves skin hydration and product spreadability.

• Other: Suitable for leave‑on and rinse‑off formulations across all personal care categories.

Recommended Use

• In creams and lotions: 2–8%

• In shampoos and conditioners: 1–3%

• Can be used at higher concentrations for intensive moisturizing products (up to 10–15%).

Handling and Storage

• Store in a cool, dry, well‑ventilated area, away from direct sunlight and heat.

• Keep containers tightly sealed to prevent contamination and moisture loss.

• Use appropriate personal protective equipment (gloves, safety goggles) when handling.

Packaging
Available in 1 kg bottles, 25 kg plastic drums, or custom packaging upon request.

Quality Assurance
Each batch is tested for purity, pH, and moisture content to ensure consistent quality.