Here is a more rounded out description. I think it’s from a company that sells a related product:

It is a high-production chemical commonly found in metalworking fluids, pesticides, antifreeze, pharmaceuticals, and various personal care products like lotions and shampoos. DEA is also used in the manufacturing of fatty acid derivatives such as cocamide DEA and lauramide DEA, which serve as emulsifiers and foaming agents.

www.ebsco.com/…/diethanolamine-dea