82% of users report dandruff and itch relief after the first use with a low 3.5 pH ester blend that balances sebum at 1mg/10cm².Regular shampoos use only 1-2% active ingredients. We use clinically optimized zinc pyrithione and salicylic acid with 100% pure jojoba, argan and castor oils for long-lasting flake & itch relief.Our Ester-X formula heals on contact with a 15-25% ester balance that mimics human sebum. Unlike shampoos with harsh chemicals (coal tar, ketoconazole, sulphates) Ester-X reduces scalp cell division up to 98% to stop flakes from forming.Unlike shampoos that burn, we use skin-safe zinc and willow bark clinically proven to treat and prevent dandruff. Dermatologically approved for all hair types and coloured hair. No damage, colour loss or irritation with long-term use.Get relief on day 1 from flakes, itching and redness with Ester-X power that provides all-day comfort. Non-comedogenic, 100% vegan, cold processed at 1-4°C for stability and dermatologist approved for sensitive skin. We are cruelty, paraben, sulphate, and dye free.