1) Anti Androgen medication - Finasteride or Dutasteride
2) A good shampoo such as the coal tar variety or nizoral.
3) Minox / Rogain Foam
4) Research micro-needling & do that on area's of the scalp with weakness.
I think its about time we start giving micro-needling a bit more respect & credibility. There have been some incredible results highlighted recently & I myself have had some good early results with it.