Kirkland brand Minoxidil foam has no glycerin like Rogaine Foam, but seems to just have extra alcohol. Wouldn’t this just dry out the scalp and hair defeating the purpose of using the foam?
Glycerin is an alcohol. I really don’t know if there will be a difference in scalp dryness from Kirkland Foam or Rogaine Foam. The ingredients in each medication are similar enough, but the differences might cause someone to see dryness or other irritation. If you don’t like one, try the other.