The Katharē Flow Scalp Tonic is a weightless, leave-on serum designed to soothe scalp stress, protect hair from urban pollution and frizz, and provide a moment of mindful calm. Infused with Centella Asiatica, Guava Leaf, and Flaxseed, it's the essential final step in your ritual for a balanced scalp and resilient hair, grounding you for the day ahead.