I will 'occasionally' use a straightener, but try to avoid it because it 'does' damage hair, and because my hair is pretty much straight anyway, I don't really need it. It does get slight waves at times, but that's okay. I use a protective spray when I use the straightener, and I still notice a few split ends after using it, which is snip off immediately. It isn't good for hair. Heat is never good for hair. I would think hair straighteners are even worse than blow dryers, because the HOT part is actually sliding over your hair. Ceramic ones are better...but still. Its just a once-in-awhile thing for me...something I do ONLY when I need to get dressed up for something special. LOL!