One of the best leave-in products I have tried. Expensive but worth it. You don't need to use a large amount, so it lasts a long time. Moreover, if you use a large amount, it can weigh down or make your hair look like you have applied some product. If you use an amount about the size of a hazelnut in your palm (it may need a little more or a little less depending on the length and density of your hair) and spread it well on damp hair (I comb it while damp to distribute the product well, but others apply it only with their hands), the result is very good!