Monistat 7. Real talk. DHT is what is killing your hair follicles and Monistat 7 (or the off brand equivalent but it has to be of the Monistat 7 chemical, name escapes me right now) treats DHT as if it's a fungus and kills it. Now, you don't put the bread infection cream right on your dome out of the tube or I didn't, I bought one of those travel bottles with the applicator tip and mixed the entire tube of Monistat 7 Wal Mart brand, an egg, some Shea Moisture Biotin spray liquid, some Do Gro conditioner, and jamaican black castor oil. It bought my vertex back in no time, real talk. Twice a day, usually in the morning and when I got back from work.
Also, take a Biotin pill aka hair, skin, and nails pill
I stopped doing it and am thinning again unfortunately, plus I been lifting and taking mad supplements so I know the DHT is back going crazy.
Also, you could just embrace it. I'm 30 now, it's kind of a distinguished look. I'm not O.D thinning everywhere, just a bit up front but the line stays crisp.
And for those asking about the spray paint, that's called Black Ice. You can get it off Amazon for about $16, typically just supposed to fill in thin spots and is pretty undetectable except when super close up, but these dudes making entire lines out of it are playing it wrong.
Also look up Cabolki. **** is magic. IDK what it is, if it's actual hair, or cotton, or some type of fiber, but it works. I have a full bottle. Just never bought myself to be able to use it, I got a bottle of Black Ice too pretty much DS. I am just coming to grips with it, probably stop fighting it and be fully blady once all these Biotin pills I have run out.