Hi there’s certain types of vitamins you could help with hair grow and thickness. My hair is thin so that’s what I have to use and then I also use a biotin shampoo and conditioner and just make sure it doesn’t have like the sulfate free all that basically natural and same with your regular shampoo and conditioner and then also use clarifying shampoo once a week also braid it before you go to sleep and wear either a silk bonnet or sleep on a silk pillow