Masteron, Ana Anavar (var) , Primo, and Winstrol are all popular DHT derivatives. They all can cause hair loss if you are prone, but it Anavar (var) ies by individual based on genetics and dosages. Out of these four, I read the most complaints about Winstrol causing hair loss, and the least problems from Anavar (var) and Primo. Masteron is probably in the middle, just based on the the threads I've read over the years from people's results.