When limp, lifeless locks are sending out distress signals, often you need to get to the root of the problem. Healthy-looking hair starts with a healthy scalp. ESPA's Tri-Active Resilience Clarify and Fortify Scalp Serum is the first line of defence against external aggressors.The lightweight, clinically-proven formula spreads quickly and easily through the hair, whilst exfoliating the scalp to gently, yet effectively, tackle impurities. Red Seaweed soothes with hydration, easing the discomfort of dry, itchy-feeling scalps.