At a glance
- CAS number
- 66082-42-6
- INCI name
- Polyglyceryl-3 Diisostearate
- Function
- emulsifier, emollient, skin conditioning
- Typical use level
- 0.5%–5%
- Solubility
- oil
- Stable pH
- 4–8
CAS number and synonyms are sourced from PubChem. Function, usage levels, pH and compatibility are AI-assisted formulation guidance — verify against your supplier's technical data sheet and applicable regulations before use.
Also known as
PG-3 Diisostearate Polyglyceryl-3 Diisostearate Triglycerol Diisostearate PGDIS
Compatibility
Works well with:
Polyglyceryl-2 Dipolyhydroxystearate Cetyl Alcohol Shea Butter Cyclopentasiloxane Isononyl Isononanoate Dimethicone
Functions well in W/O and W/Si emulsion systems, often co-emulsified with other polyglyceryl esters such as Polyglyceryl-2 Dipolyhydroxystearate to improve emulsion stability. It is oil-dispersible and should be incorporated into the oil phase during formulation. Compatible with a broad range of cosmetic oils, silicones, and waxes.
Formulation notes
Polyglyceryl-3 Diisostearate is a diester of isostearic acid and triglycerol, used primarily as a W/O emulsifier and skin-conditioning agent. It imparts a smooth, non-greasy skin feel and is valued in sunscreens, foundations, and color cosmetics for its ability to stabilize high-oil or pigment-heavy systems. It is considered mild and well-tolerated, making it suitable for sensitive-skin formulations.
Frequently asked questions
What is Polyglyceryl-3 Diisostearate?
Polyglyceryl-3 Diisostearate is a emulsifier, emollient, skin conditioning used in cosmetic and personal-care formulation. Typical use level is 0.5%–5%. It is oil-soluble. Stable in the pH 4–8 range.
What is Polyglyceryl-3 Diisostearate used for?
Polyglyceryl-3 Diisostearate is used as emulsifier, emollient, skin conditioning in cosmetic and personal-care formulations.
What is the typical use level of Polyglyceryl-3 Diisostearate?
Polyglyceryl-3 Diisostearate is typically used at 0.5%–5% in the finished formulation. Always confirm against your supplier's technical data sheet.
What is the CAS number of Polyglyceryl-3 Diisostearate?
The CAS registry number for Polyglyceryl-3 Diisostearate is 66082-42-6. Its INCI name is Polyglyceryl-3 Diisostearate.
At what pH is Polyglyceryl-3 Diisostearate stable?
Polyglyceryl-3 Diisostearate is generally stable in the pH 4–8 range.
What ingredients are compatible with Polyglyceryl-3 Diisostearate?
Polyglyceryl-3 Diisostearate works well with Polyglyceryl-2 Dipolyhydroxystearate, Cetyl Alcohol, Shea Butter, Cyclopentasiloxane, Isononyl Isononanoate, Dimethicone.
Related ingredients
- Cetyl PEG/PPG-10/1 DimethiconeEmulsifier
- Behenyl PEG/PPG-20/20 DimethiconeEmulsifier
- Cetearyl AlcoholEmulsifier
- Cetyl PhosphateEmulsifier
- Glyceryl StearateEmulsifier
- Glyceryl Stearate CitrateEmulsifier