how to make my hair thick and healthy?

[bIackpill]

im 16 and all my life i have had very straight and not thick hair, when a little wind comes my haircut starts to look like hltler's and i hate it, beacuse of my not thick hair look my hairline is visible, how to make my hair thick and healthy and what are the best shampoos that wont damage it more? any help is very appreciated

 

[DescendingDown]

Rosemary shampoo and conditioner can work