Wirelessly posted (Xperia Z: Mozilla/5.0 (Linux; Android 4.4.2; SGP521 Build/17.1.2.A.0.314) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/36.0.1985.135 Safari/537.36)
There shouldn't be any problem to bring them in, only to send them out as hong kong has limitation on expert of baby formula.
I wonder how you bring them in? In checked luggage or surface mail?