Sodium Lauryl Sulfoacetate (SLSA)

Sodium lauryl sulfoacetate (SLSA) Sodium lauryl sulfoacetate , abbreviated SLSA, is a powder surfactant that produces dense and stable foam even in solid and anhydrous products. It is therefore used primarily in bath bombs , foaming bath bars, solid shampoos and syndet soaps, where liquid surfactants are difficult to process. Compared to the commonly used Sodium Lauryl Sulfate, it has a lower irritation potential. Its molecule contains a sulfoacetate group instead of a sulfate group, yet the foam remains rich and creamy. It is therefore also suitable for rinse-off products for sensitive and children's skin . Key properties Rich foam – dense, creamy foam with small bubbles that lasts a long time in the bath. Sulfate-free – a product containing it can be labelled as sulfate-free, while foaming performance is comparable to sulfate surfactants. Powder form – introduces no water into the formula, which is decisive for solid and powder products that would otherwise activate or disintegrate. Anionic character – combines with anionic, amphoteric and non-ionic surfactants, making it suitable as a primary surfactant or as a co-surfactant in solid shampoos. Readily biodegradable – meets the criteria for ready biodegradability according to OECD 301. Use in formulation In anhydrous products, SLSA is simply blended with the other dry ingredients. The recommended usage level is 1 – 50 % . In bath bombs with baking soda and citric acid, it is used at the lower end of the range. In foaming bath bars and solid shampoos, the proportion is significantly higher, as it is the primary foam carrie