Do you believe there is a difference (other than price) between salon grade and high-street/drugstore shampoos?
I find that with Salon shampoos (i personally use Tigi Bedhead) that i have to use only a very small amount to both the shampoo and conditioner to what i have with some brands i can buy in the Supermarket.
I think there is, especially if you compare a super-cheap brand (not mid-range) to a much more expensive salon brand.
I believe that if you look at the ingredients on the bottle of the salon shampoo, then find similiar ingredients on a store bought brand then you should be alright.
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