As far as I remember, the transdermal absorption of minoxidil is about 4%. Thus, 2 mg of minoxidil penetrates from 1 ml of 5% solution. Is it correct to assume that 2 mg of oral minoxidil twice a day is the optimal dose?
Dr. Pen M8 is very good. It has 0.18 mm thick needles and is more powerful than other models.
For comparison, the popular model A6 has a needle of 0.25 mm in thickness.
