All of these can be harsh on your hair:
Test
anadrol-50
winstrol
primobolan
dianabol
halotestin
A good hair loss prevent stack when using all of these:
Minoxidil
Rogaine
Nizoral
Spironolactone - topical solutions or lotion of Spiro.
If you are doing testosterone add:
Finasteride - It works by blocking the conversion of testosterone to DHT, the active component behind hair loss.
or
Dutasteride
One of the best custom minoxidil blends is 15% Xandrox solution:
Regrowth - The Science of Hair Restoration
I just saw this is a new product:
Minoxidil 6%-Plus
Price: $ 31.50
Quantity and Ingredients: 65 mL. 6% minoxidil (60mg minoxidil / mL) and 0.1% finasteride (1mg finasteride / mL) in a liquid base of 50% ethyl alcohol, 30% propylene glycol, 20% water and a trace of phosphoric acid
Length of Use: 65 mL is a 1-month supply when used twice daily as directed or a 2-month supply when used once a day in combination with other minoxidil or Xandrox formulations.