PEG-7 glyceryl cocoate is a complex blend of a polyethylene glycol (PEG) derivative and coconut + glycerin derived cleanser, meaning it can be described as coconut derived. The mixture can be an emollient, emulsifier and surfactant. As an emollient, it helps to soften and smooth the skin, making it a useful addition to moisturisers, hair conditioners and cleansers.
There have been some concerns about the safety of this ingredient due to the presence of ethylene oxide in it. Ethylene oxide can react with other chemicals in a process called ethoxylation, which can lead to contamination with 1,4-dioxane, a dangerous byproduct. This byproduct can be eliminated through controlled purification processes, which is how cosmetic PEG-7 glyceryl cocoate is made.
The Cosmetic Ingredient Review Panel has determined that PEG-7 glyceryl cocoate is safe as used in rinse-off products and is safe in leave-on products at levels up to 10%. https://www.paulaschoice.com/ingredient-dictionary/ingredient-peg-7-glyceryl-cocoate.html?q=PEG-7%20Glyceryl%20Cocoate&fdid=ingredients