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Ammonium Lauryl Sulfate

Description

Ammonium Lauryl Sulfate (ALS) is a widely used surfactant in personal care and cosmetic products. This synthetic ingredient is derived from lauryl alcohol and sulfuric acid, with ammonium as the counterion. ALS functions primarily as a cleansing agent and foaming booster in formulations such as shampoos, body washes, and facial cleansers.

ALS effectively removes dirt, oil, and other impurities from the skin and hair by reducing surface tension between water and the substances to be cleaned. It produces a rich, stable lather that enhances the sensory experience of cleansing products. While ALS is generally milder than its cousin Sodium Lauryl Sulfate (SLS), it may still cause irritation in individuals with sensitive skin.

The ingredient's molecular structure allows it to penetrate the stratum corneum, potentially disrupting the skin barrier function. This can lead to increased transepidermal water loss and temporary skin dryness. Formulators often combine ALS with other surfactants or emollients to mitigate these effects. Despite concerns about sulfates, ALS is considered safe for use in rinse-off products when formulated properly. Its efficacy and cost-effectiveness make it a staple in many mass-market personal care items.