Why does my hairdresser tell me that good shampoo can only be bought from them and that all other brands are washing up liquid?

[CuttedUpPear]

Apart from the obvious profit motive?
Which is a very driving motive, obviously.

But can it really be true that NO shampoo bought from Boots (& their ilk) is any good?

I spent more then I ever have before on getting the colour of my hair sorted professionally recently. The dark brown has faded a lot, mostly on the middle to ends, over 5 washes, so I went back to the hairdressers today to ask her to look at it.
Basically she told me that it's because my hair has bleach on the ends (from previous highlights) and also because I didn't buy Kerastase shampoo from them to use on it, I'd just used Clairol Colour Protect (which I'd thought was fine). The turning up of the nose she did, it was ridiculous!

I don't know the answer to this OP so can't help but came on to say I just hate it when you know the hairdresser is about to subtly try and sell a product. It usually starts, 'so which shampoo do you use?'...

I had this discussion with my hairdresser, who is very non-pushy of her salon range. She said one problem is that she and her colleagues hadn't bought shampoo and conditioner in a shop for years as they all got the salon range cheap so they didn't really know what was any good apart from their own range.

Thanks for all your replies.

Don't worry, I am NEVER going to that hairdresser again. I only wish I had been quick witted enough to tell her that I didn't want a blow dry. It was insidious suggestion, the way she did it.