what is available?
Vaniqa (eflornithine Hydrochloride)
This works but is expensive it slows down the hair growth and is available on prescription for female hirsutism.
It is a pharmaceutical product rather than a cosmetic or OTC (over-the-counter)
It does require a prescription but can be imported quite legally but as said it can be expensive. http://www.vaniqa.com
Most other creams are simply retardants and again I must stress that they are targeted at natal females.
Slowing down the hair pattern in a male is much harder or rather it takes much longer before any noticable (and sustained) effect will be felt.