Buffer system for urea in a product with ph 8
Looking to buffer urea in a body wash with a ph of 8.
Based on pK, citric is used only up to ph 6 and lactic only good to 4.8.
I should note that the body wash contains African black soap as a label ingredient and so must have pH of at least 8.
Of course I will be experimenting, but any advice on buffering urea could save me much time and aggravation.