What is Polyglyceryl-3 Diisostearate? The Versatile PEG-Free Emulsifier for Natural Cosmetics

In the evolving landscape of personal care, formulators are increasingly seeking ingredients that balance performance with skin-friendliness. Polyglyceryl-3 Diisostearate (CAS No. 63705-03-3 / 66082-42-6) has emerged as a cornerstone ingredient for those prioritizing "Clean Beauty" and PEG-free solutions. This non-ionic, vegetable-derived emulsifier offers unparalleled versatility in both skincare and color cosmetics.

What is Polyglyceryl-3 Diisostearate?

Polyglyceryl-3 Diisostearate is an ester of diisostearic acid and polyglycerin-3. Unlike traditional emulsifiers, it is known for its excellent skin compatibility and mildness. It typically appears as a yellow, viscous liquid and is highly effective in creating stable Water-in-Oil (W/O) emulsions.

Key Benefits & Functions

1. Exceptional Emulsifying Power (W/O)

It is a powerful W/O emulsifier with high stabilizing properties. Even at low concentrations, it can stabilize high internal phase emulsions, ensuring a smooth, consistent texture that resists temperature fluctuations.

2. Excellent Pigment Wetting

For color cosmetics like foundations and lipsticks, pigment distribution is crucial. Polyglyceryl-3 Diisostearate acts as a superior wetting agent, allowing for high pigment loading while maintaining a silky application and vibrant color payoff.

3. Moisturizing and Emollient Properties

Beyond its functional role, it serves as an effective emollient. It forms a breathable, protective film on the skin's surface, preventing trans-epidermal water loss (TEWL) without the heavy, greasy feel associated with traditional oils.

4. PEG-Free & Natural Origin

As consumers demand "green" labels, being PEG-free is a significant competitive advantage. Derived from renewable plant sources, it meets the standards for natural and organic cosmetic certifications.

Main Applications in the Industry

Polyglyceryl-3 Diisostearate is found in a wide array of premium formulations:

• Sun Care: Ideal for high-SPF sunscreens and water-resistant lotions.

• Skincare: Night creams, barrier repair balms, and baby care products.

• Color Cosmetics: Liquid foundations, concealers, creamy lipsticks, and eyeliners.

• Cleansing: Used in oil-to-milk cleansers for its ability to rinse off cleanly while leaving the skin soft.

Why Choose Polyglyceryl-3 Diisostearate for Your Next Project?

If you are looking to develop a product that requires long-lasting hydration, water resistance, or high pigment dispersion, this ingredient is an essential tool in your laboratory. Its high HLB value (typically around 3-5) makes it the go-to choice for sophisticated W/O systems.

Technical Specifications at a Glance