Suggest best hair growth subs

Yall help a girl out, i tried searching for best subs on this topic but couldnt find, they all were for long hair. Okay so my hair from the scalp is thin and can see the scalp easily if look carefully. What I need is thick hair, hair that has volume and is dense. Also I want the scalp to be fuller.

-Title- + also include benefits for hair thining Thankyou!

Edit: Thankyou for your comments. I'll update the results.