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Durosoft PG4-O

Naturally formulate rich creams and water-free oils and cleansers


Specially designed for oil-in-water formulations, this polyglyceryl-4 oleate emulsifier is perfect for blending oils seamlessly into creams and cleansers. Durosoft PG4-O is perfect for brands aiming for certifications by COSMOS, NATRUE and aligns with China's compliance, making it a globally accepted choice. 


INCI: Polyglyceryl-4 Oleate


Plant-based emollient from sunflower seed oil


Excellent water in oil (W/O) emulsifier




No need for co-emulsifier


COSMOS and NATRUE certified


China NMPA compliant


Free from GMOs, Ethoxylates and Preservatives

The majority of our bases are gluten-free - if you require further information please contact us here.

We use palm and palm kernel oils, and ingredients derived from both oils. Wherever possible, we use oil and ingredients from certified sustainable sources. All products that are made using certified sustainable palm and palm ingredients have the letters SG or MB at the end of their name referring to RSPO Segregated (SG) and RSPO Mass Balance (MB). It isn’t possible to source everything we use from certified sustainable sources, but we are always researching and discussing with our suppliers to find new options.

Lye (also known as Sodium Hydroxide or Potassium Hydroxide) is the material that is used in making all of our soaps. Solid soaps (Crystal Melt and Pour range or Extruded soap bases) use Lye from Sodium Hydroxide, while Stephenson Liquid soaps use Lye from Potassium Hydroxide. We use Lye to saponify oils and/or fatty acids to produce soap. Once the soap is produced, all the lye is used up during the saponification reaction and so there is none left in the final product.

No, we are a speciality base supplier, we manufacture and ship soap bases and other product bases that are converted by our customers into finished products. Typically our bases make up around 80-99% of a finished product.

No, we are strictly against animal testing and our ingredients are not tested on animals.

GMP applies to companies manufacturing finished products. As a supplier of ingredients and bases, this does not apply. Stephenson holds ISO 9001 Quality Certification and supplies companies that have GMP certification.

We've been making soap here at Stephenson’s since 1856, originally for the textile industry.

Yes, all the glycerine used in our soap bases is derived from vegetable sources.

Most of our product are vegan friendly. Only small amount of our products contain animal-derived milk and honey. These include Crystal Goat’s Milk, Crystal Donkey Milk and Crystal Honey.

We have appointed distributors worldwide to support and manage our supply chain, see our 'where to buy' page to find out where you can purchase our products.

The main difference between fragrance oils and essential oils is that fragrance oils are manufactured in a lab and essential oils are made of natural materials. Due to their natural properties, essential oils can have an impact on the stability of your product and cause hazing.


Durosoft PG10 CY-MB works well in solubilizing the tocopherol.

Yes, you can use Durosoft PG10CY-MB. The level depends on the amount and type of fragrance you are going to use.

If you're making an emulsion, high shear mixing is required.

It depends on the formulation, usually you can get good results with < 10%.

No but you can check the guide formulations in our guide book here.

Emulsions (creams and lotions), leave-on and rinse-off, face body and hair products, as well as waterless formulations.

No, they are cosmetic grade.

Yes, Durosoft PG10CY-MB works very well at solubilising fragrances and it can be a straightforward swap for PEG-40 and even Polysorbate 20. For more information download our brochure here.

We have a formulations guide available to download with Durosoft PG10-O and other ingredients. It is available to download here.

We have a formulations guide available to download with Durosoft PG10L-SG and other ingredients. It is available to download here.

We have a formulations guide available to download with Durosoft PG4-O and other ingredients. It is available to download here.

We have a formulations guide available to download with Durosoft PG4L-SG and other ingredients. It is available to download here.


PG4-O and PG10-O have 18 months from the date of manufacture.

PG4L-SG, PG10L-SG, PG10CY-MB have three years from the date of manufacture.

You can find it in the brochure (click link here), on our Durosoft product matrix (click link here) or on the product page for each ingredient on the website too.

We supply Durosoft in a range of packaging from 10kg, 25kg through to a bulk drum of 200kg.

In the original packaging at ambient temperature (no more than 25°C) and out of direct sunlight

Yes, they can be heated to approximately 100°C but this should not be repeated multiple times (heated and cooled) as this could adversely affect the colour of the product.

No, they are naturally derived.

Durosoft products are approved by COSMOS to be used in certified organic formulations, however, they are not certified organic ingredients.

Yes, Durosoft is suitable for vegans.

In line with the definitions within ISO16128-1:2016, based on the information from our suppliers and our manufacturing process, the natural origin Index for this product is 1.

Technical documents

Here you will find all the relevant technical documents and information for our Ingredients. If you require any further information, please contact us.

Durosoft PG4-O INCI & Spec

Durosoft PG4-O SDS

Where to buy


Want to know more?

To speak to a member of the Stephenson team, please complete the form opposite and we’ll get in touch.

Alternatively you can speak to our sales team using the details below:


+44 113 205 0900

8am - 4:30pm


8am - 4pm