Finasteride questions

If I apply 0.1% 1 ml solution of topical liposomal finasteride daily. That would mean a dose of about 1mg.
If I apply 0.1% of 2ml solution daily. That would mean a dose of about 2mg. Is this what you mean or would I have to change it to 0.05% to keep with the 1mg dose? I believe you have mentioned that about 5% or 18% of the medicine goes systemic. Which one of these would be the better estimate? 

If you have the time I do have a few more questions:

If my hair loss still regresses, is there a point in increasing the dose? If so, by how much and what would be the limit? Also in your experience how effective is 0.1% for people around my age and does it actually reduce the chances of side effects? 

Finally, although I know they are rare, I wanted to get some clarification on the side effects:

I have mild gynecomastia left over from puberty. Does that make me more likely to get finasteride-induced gynecomastia?

Can long-term use of finasteride cause side effects like infertility? If so, in your experience do these always go away once the mediation is stopped?

1. I only prescribe the Liposomal form of topical liposomal finasteride, not regular topical finasteride, and step-wise, increasing the dose from 0.01% over a year to the 0.1% ideal dose. I don’t know if I agree with your math. From a practical point of view, what I do works.
2. The ideal dose, in my experience, is 0.1%
3.  I have seen rare reports of side effects that can be offset by lowering the dose to 0.01%
4. Juvenile gynecomastia usually doesn’t increase the risk when taking finasteride as an adult or late teen.
5. Finasteride is not known to cause infertility, but there are reorts of reduced sperm count for men on finasteride.
6. Fertility side effects usually go away in a couple of months after stopping the oral finasteride.