I've ordered from Luxury Parlor three times over a period of 3 years following a friend's recommendation and never had a problem until my last purchase. In fact, unlike other reviewers, my orders didn't take too long to arrive and all seemed to be fine until then (I only ordered Kerastase products, btw).
Then after my third order, I became very suspicious that the shampoo I got was counterfeit b/c the smell was clearly different from the same shampoo I tried at my sister's place (who bought hers from a salon). I decided to do some research, but unfortunately didn't really find any conclusive info that the company was a scam.
I can't proof the product was counterfeit but the sign that something was fishy is that the serial number was cut off from the bottle to clearly avoid me trying to track where it came from. I hadn't noticed that at all in my previous products (never cared to check), but then this time I decided to check the other products I bought on that last order and they also didn't have serial numbers, so I throw them all out.
Perhaps not all their products are fake but I advise you to stay clear from it unless they prove they're an authorized seller. They might be simply re-selling products from sketchy vendors w/o much regulation (and not purposefully conterfaiting products per se). So how can you be sure products are not stolen, contaminated or expired? I guess I was lucky before b/c the previous products seemed to be totally fine until this last order. Again, I have no proof they're a scam but figured would be helpful to tell my experience so people are aware of the risks and know better when buying this stuff online.
You should watch this video from Karastase's website. It's definitely worth paying the extra money to ensure your product is real and that you're getting it from an authorized retailer. It's easy to get allured with the good prices, but be careful and get educated. I was naive enough to not get informed before:(
http://www.kerastase-usa.com/_en/_us/conso/services/consumer_alert.aspx
Hope this helps!