How can Anavar be easy on the hair line?!

OK I've genuinely scoured the internet and there is no concrete answer on this!!

Please reply only if you understand it.

I accept that it IS easy on your hair line, which seems to be the genuine consensus ... but it is a DHT derivative, so how is this possible?

I want to be sure before I bosh the 200 tabs Ive just bought~!!

Thanks.