I've been dealing with female pattern hair loss for a few years now and have tried a few different treatment options. I found that minoxidil (Rogaine) was the most effective for me in terms of regrowth, but it did take a few months to start seeing results. The cost can add up though, as you need to continue using it to maintain the results.
I also tried PRP (platelet-rich plasma) injections, which were more costly upfront but did show some improvement in my hair density. It's important to talk to a doctor or dermatologist about which treatment option might be best for you, as everyone's experience with hair loss can be different.