This conditioner has not been formulated to be left in the hair, so it contains ingredients that will likely weight your hair down and make it look a bit greasy if you don't rinse it. However you can try to not rinse it off completely, to leave some of it spread over your hair. You can either squish your hair with water in your hands several time until you feel enough of the product is rinsed or even try the 'bowl rinsing method'. Every hair is unique so you will have to experiment to see if that can work for you and if yes, what is the best 'level of rinse' that you need. We teach in detail all about shampoo, conditioner and leave-in in Hairqare Lab, make sure to stay tuned for the special announcement on graduation day!