Having long hair means that I need extra nourishment especially before I blow dry my hair. Kerastase is a cult brand that I have been using on and off for over 10 years and it has never failed me. This product is superb as it is a leave-it treat that protects the fragile hair from the harsh effects of heat. I can attest that this really works as I hardly have any spilt ends! My hair is also left feel smooth and tangle free which is a bonus! I love the smell too which is a treat! Luxe haircare at its best!