Hey there, no you don't have to mix them in water first, they are water soluble powders. Just be sure whatever base lotion you use is water soluble. KA can be a booger to get to dissolve, warming your base lotion prior to adding KA would work. You just don't want it too warm. Let me know if you have any other questions!Hi Gymrat
For this recipe do I need to dilute the powders in water first or mix it directly with the lotion?