smooth onto

smooth (something) onto (someone or something)

To spread some substance evenly across the surface of something or on someone's skin with a rubbing motion. I smoothed the peanut butter onto the crackers and sprinkled raisins all over them. You'll need to smooth this ointment onto the burned skin three to four times per day.See also: smooth

smooth something onto someone or something

 and smooth something onto spread or flatten something onto someone or something. Ted smoothed the suntan lotion onto Alice, who lay on a towel in the sand. He smoothed on some lotion.See also: smooth