They intenatationally send the products piece by piece. If you don't like it (and most of the time you will not), you have to send it also piece by piece back to meet a 14-day deadline, which means high costs on mail service. They in fact "blackmail" you through mail fee.
They also lie in return policy. They say in the policy that they can desice to give you 75% discount and you can keep the stuff. The real life is that the discount is only a coupon you can use during your next purchase.