The abstract talks about how Aspirin (ASA), inhibits minoxidil's hair growth effect in a dose dependent manner, by inhibiting COX-1. Diclofenac too inhibits COX-1, I think to a lesser degree than ASA, but still. Now, Diclofenac seems to have a positive effect on hair growth, however, such hair seems not to mature (or grow) beyond a certain point. So, it would be interesting to know if a selective COX-2 inhibitor would yield better results.