Never had any issues with hair while using Primobolan.

Probably the safer bet to keep using primo than mast if I had to choose. Both are great for fat loss and hardening but with the added fullness from primo it just takes the cake. If you're not prone to it genetically then you're most likely good either way

Throwing my two cents. I have a little experience with both compounds. I was hesitant to push any MAST as I didn't want the hair loss; from the reading I had done it was a definite. after speaking with a few people, & a off the wall convo with a Dr in a waiting room, & other convos. Seems with male pattern baldness we either have it (gene), or don't. the AAS usage will speed up the process absolutely. However it does not initiate it, the male patten baldness gene does. I have taken MAST to 450mg weekly without shedding/thinning or any others hair side effect. Primo a little less , but about the same. As other have mentioned some guys lose alot of hair pre 30, lots don't make it to 40 with full head without ever touching any AAS

Started balding at 23. Was getting fades and shape ups for a few years until a thai hooked laughed at me and asked why don't I just shave it all off. Im blessed with a nice dome. My brothers been using finesteride for years. He's never lost his hair. He's also never cycled much. I have found dbol and anavar in his shit but I know he wasn't using alot or often. If you really care about your hair, I'd stay away from masteron. I couldn't say for sure but primo might be a little easier on your hair.

It's so genetic. If you're gonna a go bald, you can either try to use finesteride and get surgery n shit. H I doses of test can cause alot of body hair. I've got sheep's wool. I love it tho.

Balness and hair growth is a very real side effect of juice. Not everyone experiences it. Id consider what's most important for ya. If you're that concerned, don't use either. That'd be my advice.

The accepted bro science, as far as I’m aware, is that at sub-mass monster doses AAS will only significantly affect users who are genetically prone to MPB, irrespective of compound. Anecdotally, I have been balding for way longer than I’ve been on gear and have used mast and dhb along side moderate doses of test and have basically seen no change in my hairline since I started. Take that with a grain of salt because I consider myself bald already and don’t pay too much attention to it anymore. I have roughly the same amount of hair as Jason Statham in Lock, Stock and Two Smoking Barrels for reference.
Only way to find out how you’ll respond is to try out different compounds and see. Or come to the dark side, shave your head and blast whatever you want with no worries.

Out of the two, you’re safer with primo. You can buy DHT blocker shampoo as precaution. Masteron wrecked my hair bad. If you’re worried about balding, don’t run masteron. It’s a shame too because I liked what masteron was doing for me.

Opinions is all you can get with masteron, primo doesn't effect my hairline but you making another post about has made me lose 12 hair follicles. Since each compound reacts different to each person, no one can answer these questions you must figure it out on your own. The only human studies done with mast are on females with breast cancer so there is no answers on what it does long term to you, but blood work wise you won't see much of a change. Primo is the same for me but in you, it might lower estro. But no one can tell you the answer without you doing the blood work. Sorry, these are the facts.