thank you for sharing this! during the time when our infant daughter had cradle cap, we didn't use a cleanser on her scalp; we rubbed olive oil onto her scalp, let it loosen up the dead skin, wiped it away with a warm bath cloth or infant brush. her scalp and hair were clean and the oil reversed the cradle cap.
i want to add that i do what is called the oil-cleansing method of cleansing my face and neck. it involves only sweet almond oil and a very warm bath cloth. i haven't washed my face with a traditional cleanser or soap in almost a year and my skin is clean and clear, so the idea of cleansing an infant's scalp with oil makes perfect sense.