The Learning Curve – if you are used to a normal flat iron or standard curling iron, than this ‘revolutionary’ rotating barrelled iron will need a bit of 
practice to get maximum speed and effectiveness out of the instyler The rotating iron benefits also mean that your previous technique will have to be modified to position and move the InStyler Iron through your hair for maximum benefit.
Unprotected Hot Barrel – the design of this hair iron bring a great many benefits for improvements in the way that you straighten, curl or style your hair. One major criticism that was common by a great many women was their warning that the hot barrel doesn’t have a protective shield and so could burn if it touches your skin. Many women, in fairness, did raise this as an issue, but nevertheless ended by saying that after getting more used to it, you kind of learn to be more careful.
Not Good For Very Short Hair – so many women commented that if you do have very short hair, that due to the size of the barrel, the InStyler Iron simply will not be able to get close enough to your roots to be an effective hair iron tool. Obvious really once you think about it, but certainly worth bearing in mind for those of you with very short hair.