I have mixed a couple of small batches to experiment and added some hair friendly clays, herbal extract powders as well as a very small amount of oils like hemp and castor oil. Also used peppermint and rosemary essential oil for aroma. Very happy with the outcome. Both kids and adults hair were lovely and clean after using. Now going to experiment with the solid conditioner bar to compliment our shampoo. This is a much more economical way to buy shampoo for the whole family especially over the long term.