Ammonium Lauryl Sulphate (ALS)

Sodium Lauryl Sulfate (SLS) is often considered the industry benchmark, its structural relative, Ammonium Lauryl Sulfate (ALS)—chemically termed ammonium dodecyl sulfate—serves as a vital alternative. By substituting the typical alkali metal sodium counter-ion with a bulkier, weakly acidic ammonium ion, ALS introduces distinct physicochemical properties that make it uniquely valuable for modern, skin-compatible, and low-pH personal care formulations.

ALS is highly favored in formulations where flash foaming and effective cleansing must coexist with a mild pH profile:

• Hair Care Products: ALS is a staple primary surfactant in clarifying shampoos and anti-dandruff treatments. The bulky ammonium counter-ion modifies how the surfactant strips protein membranes from hair keratin, resulting in a cleaner, less stripped hair texture compared to SLS formulations.
• Liquid Cleansers: It is frequently utilized in body washes, facial cleansers, and liquid hand soaps formulated at a skin-compatible pH. It yields a dense, voluminous flash foam that provides a premium sensory feel during application.
• Industrial & Polymer Processing: Beyond consumer goods, ALS acts as an emulsifier in emulsion polymerization processes (such as manufacturing synthetic rubbers and plastics) and functions as a specialized wetting agent in textile and leather processing.