I discovered the Yves Rocher brand when I traveled to Paris and have tried various products. The Jojoba Repair Fortifying Hair Serum is an upgraded version of the one I used before, and I keep it at the office. I can use it comfortably anytime, whether in humid or hot weather. It isn't sticky and keeps my hair from becoming frizzy. It feels like my hair is being protected. I am highly recommending it to everyone around me.