this review title is: do not waste your money and the content is: the effect is a great idea and works alrightbut the nail polish is muddy grey and really thin even with coats it appears streaky and not consistentat best this may work over a darker nail polish but its just going to be covering it up with a nearly constant streaked black and grey appearancei do not recommend this product i am sure there are better brands with the same effect in higher quality polish save your money.there are other information for this review, one is this reviewer did purchase it and the other is 0 people think this review is helpful.