Hydrogenated Soy Polyglycerides
INCI: HYDROGENATED SOY POLYGLYCERIDES
Reviewed by Kate · Last updated 14 Aug 2026
A plant-derived conditioning agent that helps stabilise and soften skincare formulations
Best For Skin Types
All, Oily, Dry, Combination, Sensitive, Mature, Acne-prone
Addresses
Usage Frequency
Daily
What Is Hydrogenated Soy Polyglycerides?
Hydrogenated soy polyglycerides are derived from soybean oil that has undergone hydrogenation, a process that saturates its fatty acids. This makes the ingredient more stable and suitable for use in skincare products. In cosmetics, it functions as a skin conditioning agent and helps control the thickness and flow of formulations.
You'll find this ingredient working quietly in the background of many products, where it contributes to texture and helps ensure active ingredients remain evenly distributed throughout a formula.
How It Works
Hydrogenated soy polyglycerides work primarily as a conditioning agent by forming a light film on the skin surface. This helps to reduce water loss and improves the overall feel and appearance of the skin.
Within the formulation itself, it acts as a viscosity controller, adjusting how thick or thin a product is. This ensures the product applies smoothly and consistently every time you use it.
Clinical Evidence & References
Research suggests that soy-derived phospholipid compounds can be formulated into advanced delivery systems that help improve penetration of active ingredients into the skin. Studies have shown these systems are effective at localising specific ingredients where they're needed most.
The ingredient itself has a strong safety profile in cosmetic use. As a hydrogenated plant oil, it is well-tolerated by the skin and does not readily penetrate the barrier in significant amounts.
Published Research
How to Use
This ingredient is typically found in finished formulations rather than as a standalone product. There's no need to adjust your routine around it — simply use your product as directed. It works alongside other ingredients without requiring special application techniques.
Safety & Precautions
Frequently Asked Questions
From the Clinic
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