Ricin (pronounced RICE-in) is a chemical that is present in castor beans, which have been cultivated for millenniums for their oil. Ancient Egyptians used castor oil for its moisturizing and ...
"When using for brows, I like adding a drop of tea tree or rosemary oil to about 10 drops of castor oil for more robust growth and skin clarifying properties (especially if you have an oily t-zone)." ...