@peacock157 wrote:
Was it bought by you from a bona fide supplier?
Only you know who you bought it from, unless the seller is a UK business seller licensed to sell MB products I wouldn't buy anything that I was going to put on my skin. Products could be out of date at best and fake at worse.
eBay allow 30 days to return an item that isn't as described, as do PayPal.
Debit/credit card providers allow 120 days for a not as described chargeback.
It seems that you're past all routes to pursue a refund now.