Best For Skin Types
All, Dry, Combination
Addresses
Usage Frequency
Daily
What Is Butylene Glycol Diisononanoate?
Butylene Glycol Diisononanoate is a synthetic ester derived from butylene glycol and isononanoic acid. It functions primarily as an emollient and skin conditioning agent in skincare formulations, helping to soften and smooth the skin surface.
In product formulations, it also serves a technical role as a viscosity controlling agent, helping to achieve the desired texture and consistency. It is a commonly used ingredient in both lightweight and richer skincare products.
How It Works
As an emollient, Butylene Glycol Diisononanoate works by sitting on the skin surface and reducing water loss, helping to keep skin feeling soft and hydrated. Unlike occlusive ingredients that form a heavy seal, it provides a lighter conditioning effect that many find comfortable in daily use.
In formulations, it also helps control viscosity — essentially making products easier to manufacture and apply at the intended consistency.
Clinical Evidence & References
Direct clinical studies specifically on Butylene Glycol Diisononanoate are limited in the published literature. However, related butylene glycol compounds have been studied for their hydrating and skin conditioning properties, with evidence suggesting they can improve skin hydration levels and skin barrier function when used in formulations.
The ingredient has a long history of use in cosmetic products and is generally recognised as safe for topical application, though specific efficacy data for this particular ester would benefit from further research.
Published Research
How to Use
This ingredient is typically incorporated by formulators rather than something you would apply directly. Look for it in serums, moisturisers, and lightweight conditioners where it contributes to texture and skin feel. It works well alongside other hydrating and conditioning agents in multi-ingredient formulations.
Safety & Precautions
Frequently Asked Questions
From the Clinic
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