Commonly labelled as a “cyclomethicone” or “cyclosiloxane”, D4 and D5 (octamethylcyclotetrasiloxane and decamethylcyclopentasiloxane repectively) are common ingredients in the cosmetic industry and as raw materials in the production of silicone polymers. In cosmetics, D4 and D5 are used in small quantities to help with keeping moisture in hair and skin. It also helps with spreading the product on evenly.

As expired D4 and D5 cyclomethicones can no longer be used in product manufacturing, it is often disposed of as waste and either landfilled or incinerated. Instead of disposing this material stream, send it to ECO USA for recycling.

We collect surplus or expired octamethylcyclotetrasiloxane (D4) and decamethylcyclopentasiloxane (D5) for recycling. We work with numerous cosmetic companies and manufacturers to collect this silicone material stream for recycling into silicone oil, the common ingredient in many industrial and commercial applications. We offer the most eco-friendly option for the removal of cyclomethicone.

Often times, the companies we work with are able to save time and money by sending silicone materials to ECO USA.

We collect all brands and purity levels of D4 and D5 silicone. The material stream we collect are throughly tested when it arrives at our recycling plant. The material is then added to our recycling process where it is chemically broken down into dimethylcyclosiloxane. After additional filtering and polymerization processes, we end up with polydimethylsiloxane (PDMS), or commonly known as silicone oil.

Click here for an in-depth look into our silicone recycling process.

In addition to collecting D4 and D5, we also collect a variety of silicone liquids including silicone oil (all viscosities), silicone emulsions, and other chemicals composed primarily of siloxane / silicone.

See examples of silicone liquids we collect.

If you’re unsure if the expired or surplus silicone material you have can be recycled, contact us and speak with one of our consultants today.