A cleansing agent whose main thing is being a very good team player next to other (anionic) cleaning agents and working as an excellent foam booster and viscosity builder.
The downside of Cocamide DEA is that it may contain residual content of Diethanolamine, a secondary amine known to be a potential source of harmful nitrosamines. But do not panic, Cocamide DEA is considered safe as used in cosmetics, still, the cosmetic industry is actively looking at alternatives and it is used less and less often.
Show me some proof
- De Lathauwer, Geert, et al. "Thickening of Foaming Cosmetic Formulations." Proceeding of the 6 th World Surfactant Congress CESIO. 2004.