New Resistance Extensioniste, the first Kérastase training routine for long hair directed by a specialist hairdresser. From the first application: 99% less breakage, 78% less split ends. After 3 months with the training routine: It reaches 4 cm of growth. The hair is in such good condition that you will want to wear it longer. Find all Kerástase products at the best prices in Neztar.