Olaplex No.0.5 Scalp Longevity Treatment – 1.7oz is a lightweight, leave-in scalp serum designed to support a balanced, healthy scalp environment for long-term hair wellness. Infused with OLAPLEX’s proprietary Bond Building Technology™ and a soothing blend of peptides and vitamins, it helps reduce dryness, flaking, and visible signs of irritation while promoting scalp hydration and resilience. This fast-absorbing formula strengthens the scalp barrier and creates the ideal foundation for healthier, stronger-looking hair over time. Suitable for all scalp types.