Hi Fran!
Great idea!
I had heard someone who uses it for sudden panic attacks when
they are in the car, but never for hot flashes.
But come to think of it, I use a peppermint conditioner in the summer heat and also when I am having hotflashes. I never really thought about it. Kind of an afterthought - I always have it
in the shower, and if my head feels hot when I'm in there trying to wake up, I use it. I does really cool the head, and you are right. it is lasting and gets really cool a while after you use it.
I also have one from Italy with eucalyptus (sp?) and peppermint.
That one is removing hair dye and perm residue.
I hadn't had a perm in decades, but I always loved the way the conditioner felt after your head gets all hot from hair chemicals.
That one smells like Sucrets throat drops LOL.
I am going to make up a little spray bottle.
Beats frozen peas for convenience, too!

Thanks for the great idea!

-Mary Beth