I'm 30 now. I was already receding my hairline by 23, then I'm stuck with the young Justin Bieber hairstyle and it was fine. I can hide it like Korean hairstyle look. Then it gave me a wake up call when I was 26, I started noticing the top of my head thinning and it is showing my scalp when there are bright lights. Thinning on top is worse than receding hairline and temples. It's the worse. I kinda let it grew it back for a few years until when I was 28 and can't hide it anymore. Used minoxidil in 2015, had great results for 2 years and regain my top, but in start of 2017 it just stopped working. I researched and my mistake was not taking DHT blockers like finasteride which caused DHT to overpower minoxidil which made it seem it stopped working. I now started taking finasteride 1.25 mg for 2 months and still continue minoxidil, had a bad shed and almost lost all of my top hair, but now it seems it stopped. It stopped my hairfall too. No more hair on my pillow when I wake up. I notice some growth on my top head too, but the process is turtle slow. But I'm seeing little results.