dont use dht steroids to start with... if you are prone to mpb, then you are more than likely going to get issues regardless.. if you are not, chances are low you will have an issue..
You can use crazy amounts of AAS and still have great hair...Today 90% of males have very bad hair anyway, if you genetically have good hair than no worries at all, as I mention I run so many times winstrol and masteron together (probably 2 steroids worst for hair) without any hair issues...