Had to return one.
I purchased 2 of these and one never turned on.  The next one did turn on but the bristles bent easily and my hair is super thin, I can't imagine how it would work on someone with thicker hair.  Also, it did not straighten my hair as I expected and again my hair is thin and pretty straight already.  I didn't notice much of a difference.  I do not recommend this product.
Rating: 1 stars