Kiehl's has been around forever, or since 1851 to be exact. It started as a single Pharmacy in the East Village of NYC. Their concept is simple - let the product sell itself, no fancy packaging.
And the Amino Acid shampoo and Formula 133 conditioner surely do. Again, Kiehl's motto is that the products sell themselves, so don't think too much into the names. Give them a try, and hopefully you too will be head over heels with delight.