Protect your scalp from daily environmental stress with Paul Mitchell Tea Tree Scalp Defense Serum. This lightweight, invisible treatment shields against harmful pollution particles and free radicals, while helping to keep your scalp and hair calm and fresh. Powered by a potent blend of knotweed, kirayat, tea leaf, and bamboo extracts, it forms an antioxidant-rich barrier that defends without leaving residue or weighing your hair down. Perfect for all hair types, use daily for a scalp that feels clean, balanced, and protected. Benefits of Paul Mitchell Tea Tree Scalp Defense Serum Protects your scalp from pollution and environmental aggressors. Shields against damaging free radicals forming a weightless & invisible barrier of defence. Leaves scalp feeling calm, balanced, and refreshed. How to use Section damp or dry hair. Apply up to 3 full pipettes of serum drop by drop to a clean scalp and massage in. Do not rinse. Use daily or as needed. Size: 55ml