FYI, while there has been work on many different delivery systems/carriers in the past few years, there isn't a clear consensus/drug standard yet for the single "best" (talking longevity, scalp/systemic absorption, stability) way to deliver topical finasteride. I'm also not aware of any products out there right now that claim to actually replicate a blend that was used in one of the clinical/research studies. Perhaps the OP (with his background) can chime in if he's aware of any such products.Thank you for this in depth contribution! Part of me now feels slightly worried as I'm currently using Strut's topical finasteride. It has only been two months but the temple on my left hand side, which started thinning after the right, is growing in almost to the hairline (at a lower density then it was prior to the loss).
Do you have any input on their topical finasteride formulation? I tried to check your comments first but they're restricted.
Given that even ethanol/water in a gel was found effective for hair loss in one of the early clinical studies, it seems topical finasteride is a lot harder to screw up if we're talking about just doing something for your hair (the Iranian study by Hajheydari et al way back in 2009 found that a solvent of 60% ethanol / 40% water, with simple hydroxylpropyl methylcellulose as a gelling agent/viscosifier, and 1% finasteride was as effective as finasteride tablets for hair loss - http://www.bioline.org.br/pdf?dv09011). I don't know what Strut's blend of topical finasteride is exactly, but it should be pointed out that topical finasteride formulations seem generally a lot harder to make screw up and make "non-effective".
If anyone knows the ingredients list, it would be an interesting topic of discussion. Particularly interested to hear what the OP has to say about the Strut formulation as well, given his background.