I should probably start off by saying: I am a total hair product junkie! Chi 44 Iron Guard Thermal Protection Spray is by far one of my favorite products. I use the every time after I wash my hair! Chi Iron Guard protects against the harsh heat used by styling tools, such as hair dryers, straighteners, and hair curlers or wands. Chi Iron Guard is in a spray bottle, so I just spritz a few sprays on my damp hair, before blow drying. I make sure to brush the product through, so I make sure the maximum amount of my hair is protected. I am confident this product helps protect my hair from the heater products I do use. After my hair is dried, I usually use a hair straightener or curling want, so technically, I am double damaging my hair. I cannot imagine the damage I would be doing to my hair without using the Chi Iron Guard. As for scent, Chi Iron Guard is very mild. It kind of reminds me of a hair spray scent. It does not have a heavy scent, so it is not taking away from the other products I use!