When can i start applying diaper cream and ruyi oil on my newborn?

Hi, diaper cream i would say immed can apply. as for ruyi oil, maybe hold it unless u see ur newborn is having a lot of wind? even if u do apply ruyi oil, remb never to apply directly on baby. u drop just one or two drops onto your own palms, then u rub ur palms together to generate heat w the oil, then lightly massage onto ur newborns tummy.