Roux 233 Repair System Porosity Control Conditioner prep hair for cheimcal service to equalize hairs porosity and acheive predictable results. Silk preteins moisturize, detangle and add beautiful luster. a 4.5 pH closes the cuticle and hair is returned to a balanced state for increased smoothness and vibrancy. Used daily, it repairs porous hair and hkeeps chemically treated hair lustrous. When used together, Porosity Control Shampoo and Porosity Control Corrector and COnditioner increase hair strength by 34%.