every single night. I swear by this scalp serum helps to much with build up and flaking but also hair growth if you’re a friend of mine I’ve made you try this it’s incredible. Every single night before I put my curls in. @diviofficial my code is SLOANE and it works sitewide. Other favorites: dry shampoo (the best one on the market) volumizing shampoo/conditioner (the bf will only use this lol) the leave in conditioner