How long will microneedling hair last?

I’m a 30 year old guy with diffuse thinning hair. I started to take finasteride about 3 years ago and to be honest I’m not certain if it did anything for me as I didn’t have any regrowth during that time. However I’ve been able to greatly regrow a lot of my hair through microneedling over the last 2 years. I wanted to get your take on wether the hair I regrew with microneedling could be permanent? I reduced my finasteride dosage from 7 mg per week to about 3mg per week about 6 months ago and haven’t lost any ground. Your educated guess? Thank you!

I don’t believe that anyone knows for sure about how long microneedling induced hair will last. I am guessing it will last about one hair cycle (Max) which in a young man could be 3 years.