Whats worse for hair, iron or blow dry?

hot blow dry for 15 minutes or flat iron for 2-3 minutes? plz answer even if there are answers already =)Whats worse for hair, iron or blow dry?
they're both bad for your hair if you don't use the right products along with them. when you use a blow dryer or a flat iron you HAVE to use a thermal protectant on your hair, that way if the electrical device gets to hot for a moment, it's burning moisture out of the product on your hair instead of pulling the moisture out of your actual hair. and always always always use silicone based products, because not only are they light weight and non greasy, but they are a thermal protectant and a smooting agent all in oneWhats worse for hair, iron or blow dry?
Both are equally bad if you do it daily.Best is to give yourself a deep conditioning treatment at least once a month.As far as the product smelling girly,it goes away in fresh air in about 30 minutes anyway.So don't worry about it.
iron