Maybe its because i utilize the applicator to spread it over my crown and hairline but my minoxidil dries in about 45 min. I use the generic Wal-Mart brand.
When I apply it to my hair line, which pretty much gets all on to the scalp takes up to about 10-15 mins really if that. On the crown I would say anything up to an hour, because I usually end up getting some in my hair.