My hair is the type to get greasy quick - as in the next day. If I spend along time using products and blow drying it properly (1+ hours) and using dry shampoo, I can get about 4 days out of it max. I work with someone who washes their hair one a week, doesn’t use dry shampoo and their hair looks normal and nice every day. I’m curious how often others wash it? And yes I have tried to train my hair - doesn’t work