This is a must buy for the winter. I use this twice a day (after I blow drying) and before I sleep. This oil sinks into your hair immediately without any weight or greasiness. I can put this in my hair (it just disappears) and go to bed without worrying about it making a mess of my pillow. The combination of the four different oils - Maize, Procaxi, Argan and Camellia - makes the serum/oil smell amazing and my hair sucks up all the oils like a thirsty elephant. The difference before and after applying this oil is simply amazing! My parched winter hair goes from frizzy to silky smooth almost instantly.