welcome to healthcaremagic forum
ya ,it is true that minoxidil
will work only when you applied it .
but it is very and only effective medicine
so we have no other option
you can apply at night 3-4 times a wk
apply over dry scalp
only as water or oil will dilute it
just apply and spread it dont rub it
you can use finasteride
tab for best result .
i hope i have answered your question