I'm not sure what you're willing to spend on hair products but the brands I love are: Aveda, Bumble and Bumble, and Biolage. I also have thick long hair and it's delicate after all the treatments I've done to it. I gently brush my hair starting at the ends and work my way up, wash my hair, put in leave in conditioner, and let it air dry before I brush it after the shower. Never brush your hair wet. I also use these weird cord ponytails from Sephora that help prevent breakage, they do lose elasticity more quickly than a normal ponytail but my hair has been happier.