Taking topical min whilst partner is pregnant

This is an interesting question. You can decide to take it in the morning and go to work, showering when you return home.  This way your wife can touch your hair without fear. It needs to sit on the scalp at least 8 hours to get the impact of the drug; however, even the topical liposomal finasteride can go through the skin into the blood stream so you can’t 100% protect her from this drug.  Using condoms is a solution that absolutely will keep her and her baby away from the finasteride.