Science
Mechanism of Action
This ingredient functions by reducing the surface tension of the stratum corneum, facilitating the dislodgment of dirt and debris for effective cleansing. Additionally, it stabilizes oil and water mixtures as an emulsifier and can support foam generation and pH balance in formulations.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Formulators must strictly avoid combining DEA-cetyl sulfate with any nitrosating agents to prevent the formation of carcinogenic N-nitrosamines, which are harmful compounds.
Conflicts
- nitrosating agents
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel deemed DEA and its salts safe for cosmetic use under specific conditions: the formulation must be non-irritating, and the product must not contain nitrosating agents. However, the European Union has banned DEA in cosmetics due to safety concerns. The U.S. FDA does not prohibit its use but advises consumers to review ingredient lists, referencing a 1998 animal study by the NTP that suggested a link between topical DEA and cancer, though a human link was not established. Furthermore, California Proposition 65 identifies DEA as a known carcinogen, necessitating warning labels on products containing it.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Despite its functional properties, DEA-cetyl sulfate is designated as an ingredient to avoid due to significant safety concerns, including a ban in the EU, a California Proposition 65 cancer warning, and the risk of forming carcinogenic nitrosamines.
Related
Similar Ingredients
Finding similar ingredients…
References
Sources