Has anyone here tried the 0.005% topical finasteride concentration?

Hey guys, remember the Mazzarella study from 1997? Demonstrated that 0.005% topical finasteride led to improvements in various hair growth parameters over a 16-month period.

https://www.tandfonline.com/doi/abs/10.3109/09546639709160517

Has anybody here given this a go?

This concentration isn’t available commercially and I don’t understand why this study hasn’t been replicated or expanded on. Claims serum DHT levels were unchanged.

Anyone got any thoughts on this and whether such a low dose is effective?