Here are the product that I use and recommend to anyone who tries to grow their hair.
Some might be a bit pricey, but you should give it a try for sure
A leave-in that nourishes your hair
Kérastase Genesis Serum Fortifiant
Keeps your scalp healthy
Mielle Organics Rosemary Mint Hair Oil
To get Fuller and longer hair
Majestic Pure Biotin Volumizing Shampoo
For your hair, but could be for your nails as well