If you are having trouble with hair growth, I would not recommend you continue using Head and Shoulders. It is probably pretty drying. Make sure to keep your ends well conditioned, maybe try using an oil like Argan.

I also have long hair and have found that if I allow my hair, to dry naturally most of the time, instead of blow drying it, it significantly reduces the amount of split ends I have. Also using a hydrating shampoo and conditioner will help your hair stay moisturized. I wouldn't recommend Head & Sholders, try Rusk or Philip B.

Check out these cool hair styles for long hair...Easy Long Hairstyles

Good luck, hoped I helped.

Long hair...can lead to split ends because all the care for it. I have long hair and try to keep it healthy with trims every once in a while. I use conditioners to keep it hydrated. Serums are great for your hair, keeps hair nice, shiny and can prevent split ends. I been told to add serum to the ends to keep in place. Hair Conditioning masks are great for your hair. It repairs whatever you have done to your hair with heat and stuff. Eat OMEGA, protein for healthy hair growth.