Why do u get split ends with a hair dryer and straightning iron?

I have WAVY hair HOW and I hve SPLIT ends WHAT can I use TO prevent my hair to get more damaged??

I dyed my hair blonde. I had to bleach it then dye it. My roots took the color but not the middle or the ends of my hair. How...

hey, I straighten my hair like everyday, because that the onli way it looksdecent, but I get split ends!! and I end up havin ...

i have blonde hair with brown highlights in it but i want blonde how do i do that???

i need advice for shampoo and conditioner. I want it so it will lighten my hair, but also get rid of split ends. at an afford...

I was wonderin if ther is any way to get rid of slpit ends other than to have my hair cut? ...

So I've been hot ironing and blowdrying my hair so it will get sraighter - normally my hair is a giant poof ball. But I ve be...

I have a lot of split ends in my hair and my hair is really breaking I used to have hair down to a little below my shoulders...

I love my hair, the only thing I hate I that I have many split ends from straightening it blow drying it and curling it. So I...

I mean, tips besides the usual "stay away from heat appliances" and the "get your hair trimmed every once and a while". b/c ...