If it's been a year on finasteride with no results then it's time to try dutasteride. Are you using minoxidil twice daily, every day? Try adding stemoxydine. The hairline is tough, and it may just be gone forever. Short of hair transplants or feminizing drugs, there really isn't a lot you can do for it. The next best thing seems to be dermarolling, but you run the risk of creating scar tissue and never being able to get your hairline back. You are young, and better treatments are coming. I'd just switch to dutasteride, add stemox, and wait to see what the future holds. There are supplements that may help some, and a few other things like copper peptites to fight fibrosis, but you'd probably just be wasting your money.