This is a revolutionary interim step that can be used for 2 purposes: 1. For modern, relaxed, ample and supported waves. 2. To treat and care for sensitised hair during the waving service. Waving services can provoke swelling of the hair fibre, which can further weaken already sensitised hair. The Wave Customiser's acid pH is applied after the waving lotion and before the neutraliser. Significantly reduces swelling of hair fibre while allowing ceramides, amino acids and cationic conditioners to enter the cortex to strengthen hair.