Laureth-7 carboxylic acid

Laureth-7 carboxylic acid (CAS 27306-90-7 ), also marketed as Rlm 45, is an ethoxylated fatty acid surfactant used in personal care and cosmetic formulations.

It combines mild cleansing action with emulsification and pH-buffering capability in a single ingredient, reducing the need for multiple additives in complex chemical systems.

In facial and body cleansers, it delivers effective soil removal while maintaining compatibility with sensitive skin formulations, a key consideration for mild or low-irritation product lines.

It functions as an emulsifier in cream and lotion systems, stabilizing oil-in-water emulsions across a range of pH conditions for consistent shelf-life and texture.

Formulators also use it in shampoos and conditioning products where it contributes to foam quality and helps buffer the system toward a specific target pH level.

Its cleaning and degreasing performance makes it relevant in rinse-off formats where residue-free results are required for high-performance consumer applications.

Laureth-7 carboxylic acid is typically supplied as a liquid or low-viscosity paste, depending on temperature and concentration, and is available in cosmetic-grade quality.

Buyers should confirm active content and pH range with the supplier, as these parameters vary between commercial grades and specific manufacturing batches.

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