I bought an item at Hervia through Farfetch that did not suit me. I returned the item following all the instructions to have Hervia refusing to accept the return as it had a "make-up" stain (they claim) - as far as I am aware this could have happened in their hands as I don't wear make-up. In years and year of online shopping I have never experience an online shopping experience like this. I would like to ask the Hervia what would they do if a customer, trying a shirt in their shop, left a make-up stain? Would they force them to buy it before they walked out?
I would also recommend you to read other reviews, as it seems to be a pattern with this store.