I have been using rogaine, finasteride, and biotin based products religiously. From what I have experienced is stronger and thicker hair. Not so much new hair growth (minimal), but what hair I do have is much stronger. Dosage of biotin really doesn't seem to have an effect. Its all about consistency. Keep the dosage the same, and over time you will see results. Trust me, its a slow road. Find a hair style you are comfortable with and keep it. Do your best to forget that you have hair loss, because you will not get results over night. Takes years.
These are the best remedies I have found that have helped (almost immediately! ) my hair to have a smooth texture and look thicker:
1.) Wheatgrass (I take the powdered form)
2.) Glutathione capsules
3.) Coenzymated vitamin B's