comparison of powder puff: the fake back grid print is larger, while the genuine one is obviously smaller. Contrast of back sticker: the direction of genuine sticker is perpendicular to the opening direction, while the fake sticker is consistent with the opening direction. In addition, the comparison of production numbers: genuine products are clear and meticulous, false and fuzzy, and the printing is rough. Comparison of the opened interlayer sticker: there is a photo on the fake question, and it is crooked after opening. After the genuine product is put into the box, the YSL logo is very positive. Moreover, when the genuine product is torn, the adhesion is relatively strong, and the previous fake product is easily torn off. I haven't found any difference in the sponge pad inside, and the genuine one is useless. Internal liquid foundation content: the genuine product is almost overflowing, and a little puff will stick more liquid foundation, and the fake one will be pressed hard when it is first used.