Use a keratin treatment if you still go to school I recommend doing it before school starts because you probably were swimming a lot and it will get all that chlorine out of your hair then I would recommend buying the keratin after care shampoo and conditioner it’s so good I use it and I love it lucky for me though my mom is a hair stylist so she does it for me but it’s not that hard
I tried this and it was great but it was a struggle to take the rubber band from my hair. It got knotted and lost lots of hair. Suggest you to use scrunchies or smthg