The Olaplex No. 5 Scalp Longevity Hair Treatment strengthens, hydrates, and revitalizes the scalp for healthier-looking hair. Formulated with patented Bond Building Technology™, it nourishes roots while supporting long-term scalp balance. Use regularly to promote stronger, more resilient strands. Please be aware ingredients are subject to change periodically. It is recommended you check the product packaging prior to use for a complete ingredient list.