This shampoo by Keihl's is on the pricey side but rather than try something that might not work, I'd rather spend some money on something that does. It is light and leaves hair feeling 'bare' and clean. So light that you can use it daily if you want.
This conditioner also by Keihl's is so light weight but still, I don't use it everyday and only at the end of the hair shaft, never on the scalp. This conditioner gives all the nutrients the hair needed without adding the weight.
Now, this is where the magic is. We tend to over styling our hair and use too much product that leaves our hair coated with residue resulting to dull lifeless hair. Shampooing once a week with this anti-residue shampoo allows it to strip our hair from the unwanted including chlorine if you are a swimmer and get our hair ready for all the nutrients our regular shampoo and conditioner have.