Design Essentials® Wave By Design Professional Strength Rearranger is a powerful, professional-use formula designed to soften natural curl patterns in preparation for curl restructuring. Powered by ammonium thioglycolate, it relaxes internal hair bonds to enable precise texture reshaping without excessive dryness or stress. Ideal for creating smoother hair with control and flexibility, this formula lays the foundation for lasting, well-formed waves. It serves as Step 1 in the complete 3-step Wave by Design® system.