I use minoxidil for my hairline (it causes too much scalp irritation and resultant hair loss for me elsewhere), and I do think it has helped a little as the front hairline is the one place I have seen modest regrowth. However, if I skip a few days, all of the fine thin hairs that formed from weeks of continued use disappear right away, before getting the chance to become mature hair. The strands that are better developed fare somewhat better, but I do lose some of them too if I skip a few days. That is true for me even with dutasteride and a normal female T level. It seems that continued stimulation from minoxidil is necessary for me to retain any hair growth that it causes, and I will say that my results have been rather disappointing so far.