Originally posted by: sandman
Minoxidil stays in the dermis tissues of the scalp for approx 8 hours and is most effective when continually present. Hence, the instruction to apply it both AM & PM.
However, approx 80% of Minoxidil is absorbed within the 1st hour. So, one option is to apply the stuff 1st thing in the AM and then wash your hair about 1 hour after the application.
Another option is to use 5% Minoxidil with 0.025% Retin-A. [Dr. Klein's non-DMI ReMox]. I posted a study a while back showing that 5% Minoxidil with Retin-A used once per day is as effective as regular 5% used twice per day. Also, ReMox is super clean and you may just find that your hair looks just fine after an AM application.
Pretty sure the drug itself is semi-active for around 24 hours and it stays in the skin longer then that.
Any proof to the contrary?
Also washing your hair 1 hour after application is very stupid and will cause a large amount of Minoxidil to be absorbed into the blood stream leading to bad side effects and may cause some of the drug to leak down onto your face and back where it will be absorbed and cause side effects and hair growth in unwanted areas.
I'd wait at a minimum 4 hours before washing your hair after application and to be honest I'd recommend 6+ hours.
Its funny though because personally I find that Foam Minox makes my hair look thicker and it drys quickly so I never had any issues going out with it on.
04:30 PM by