Design Essentials STS Express Cleansing Shampoo Step 1 delivers professional-grade cleansing in a convenient 16 fl.oz format. This clarifying shampoo removes buildup, product residue, and impurities while preparing hair for optimal treatment. Formulated as the first step in the STS system, it gently cleanses without stripping natural oils, leaving hair refreshed and primed for deeper conditioning. Ideal for all hair types seeking a thorough reset. Experience salon-quality results at home with this essential cleansing foundation.