i have taken tren extreme before, and i notices a little thinning of the hair, but yes after your cycle it will grow back in just fine.
here is some additional info on how to prevent it...
Hair Loss:
This is another famous side that is experienced by people using ph’s. Here are a few products I would strongly recommend.
Spironolactone 5% ( on cycle)
spiro and nizoral and azeliac acid.
I would highly recommend Fina and Propecia in the mix if you have hair shedding problems. If you do have Androgenic alopecia, and a genetic balding pattern, I would highly advise you not to risk this compound.