I am moderately prone to hairloss. That is, I have lost some around the temples, but not bad at all and the front of my hairline looks a bit ragged. But, once it grows out to even an inch long it looks like I've got a damn good hairline. I will say that I didn't notice any hairloss at all until I tried aas. Ever since noticing a sizeable change I have settled on using polysorbate80 as my shampoo every shower or bath and generic cheap ass walmart version rogaine once per night. This doesn't cost me any more than regular shampoo would and it's a routine I can live with. I've been on some kind of ass on average four months per year for about four years now, give or take a little. And, I haven't had further hairloss with this combo that I use every day while on or off. The smallest amount I use is 350 mg per week and most 550-600 mg per week, so pretty low-moderate doses and usually equal amounts of test prop and tren ace.
The main thing is, if you are going to lose all your hair before you are 45 anyway you are going to lose it that much quicker using aas. So, if that's the case, don't agonize over it- or if it's too far gone already. But, if you are like me and weren't going bald in high school, then some simple preventative help like this can be beneficial.