What is the difference between and expensive flat iron and a cheaper flat iron and the effect it has on your hair?

Expensive is not always better. It is the quality you should look out for. Trusted brands are always the ones to go for and brands that your salon uses. You can always ask friends and colleagues what their preferences are and then decide for yourself.

Usually cheap drugstore flat irons have coated plates instead of solid ones, meaning that the ceramic coating will peel off and eventually damage your hair. Most expensive flat irons have good quality plates, complete features and give professional results. But beware, not all expensive models do this.