A flat iron wont do any more damage then a curling iron will. there is the chance of buring your hair but using any heated product
Honestly, Any Heat Appliance You Use On Your Hair Damages Your Hair Weither It Be Straightners Blowdryers Etc. Cermaic Hairstraightners Give You A Better Result May Damage Your Hair Less. It Is VERY Important To Use Protection, I Would Suggest Anything From John Frieda Tigi. Hope Ive Helped:]
Straighting will cause split ends and dry out your hair. I use this K-PAK Protect Shine Serum made by Joico. Just a dap will help when you are ironing your hair. It also helps aid in getting it very smooth and flat. This helps keep my hair shiny all the time! Also ceramic is deffinatly lots better than metal for your hair! Designed for: damage repair Benefits: This shine serum, featuring K-PAK's Keratin Silicone Complex, protects, polishes and seals the cuticle while helping to prevent split ends and frizziness. Hair is left glossy, healthy and weightless. Nourishes and moisturizes hair as well as protects against further damage.