Since I have thick hair, it was very unefficent to use during the day. It took 45-50 minutes to simply straighten my hair. I have medium-thick hair, about chin length...Also its wavy-to straight. Very dissapointed that it took too long to straighten and I ran out of time before I could curl it. All in all, not very useful for thick or ethnic hair, but okay if you have fine or short hair.