A process includes adding a particulate toner additive to toner particles to form a slurry, filtering the slurry to form a filter cake, the particulate toner additive functioning as a filtration aid, and washing the filter cake, after the washing step the toner particles have a portion of the particulate toner additive adhered thereto, and de-agglomerating/drying the toner particles with the additive, after the drying step the toner particles have a portion of the particulate toner additive adhered thereto.