My bedroom has no insulation on the exterior wall, and it has finished wallpaperits a pretty small room and it has an attic space to one side of the roomIts only got one exterior wall that is about 12 feet wide by 8 feet talli have a space heater in there now but it doesn't really heat the room well enoughI could use some suggestions.
Okay,So you would like to insulate that wall, but you don't want to destroy the wallpaperThere is a way that they drill holes in the exterior of the house and pump loose insulation into the various cavities of the wallThen the holes are filled with plugs.
I'm not sure about your hair straighener problem but to make your hair straighten faster, you can try to add a serum or something to your hair after you get out of the showerI use the CHI silk infusionI put about a dime size into my hair and then just comb through the hair gentle, so it goes evenly into all of the hairIt detangles my hair and it makes it easier to straighten.