Day 7 with zero hair regrowth at 200mcg a day. Not sure if the dose needs to be higher or if this compound just isnt the right astressin b. But I can say from personal experience that this product does not work as intended at the dosage I tried, not saying it doesnt work, Im just going to wait until someone comes out with how to properly dose this product then try again. Sucks a wasted $90 lol that could have been a bottle of folli, oh well trial and error.