Emulsifying Function
As a nonionic surfactant, DEA and its related compounds effectively reduce the oil–water interfacial tension, stabilizing emulsions and preventing separation. This property makes them widely used in products such as creams, lotions, and sunscreens, ensuring uniform texture and long-term stability.
Thickening and Texture Enhancement
Diethanolamine (CAS:111-42-2) compounds help increase the viscosity of formulations and enhance the sensory feel of products. They make cosmetics easier to apply and give them a smooth, silky texture, improving user experience and product performance.
Cleansing and Moisturizing
Thanks to the oleic acid group in their molecular structure, DEA-related compounds exhibit excellent lipophilic properties. They gently remove dirt and impurities while forming a moisturizing film that reduces skin moisture loss-making them ideal ingredients in products for dry or sensitive skin.
Compatibility and Foam Stability
When combined with other surfactants (such as SLES), DEA derivatives reduce irritation and enhance foam stability. This synergistic effect makes them common ingredients in facial cleansers, body washes, and other personal care formulations.
Widespread Use in Personal Care Products
In cosmetics, DEA-related compounds are intentionally used as emulsifiers, foaming agents, and pH adjusters. They are found in a wide range of products, including shampoos, conditioners, soaps, and bubble baths, where they contribute to both product quality and performance consistency.
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