Baby wants to eat baby powder, lotions, desitin, ect?

We have a changer table in our living room for our son (1 year old) which holds his diapers balmex, desitin, baby powders, tooth paste, lotions ect. Over the last few months it seems he just wont stop trying to eat them. I have moved the shelf holding these items up higher to where he cant reach, but if any of the items are in reach the first thing he tries to do is eat them. It has even come so far that he will throw a toy at the shelf to knock the lotions down into reach, shake the table in order to reach them. I now have moved every item out of the room and am basically depending on no baby treatments at all, because he will even reach into his diaper for the lotion and powder that we put on his . Does anyone know if this is normal? Why is my son is so determined to eat these products? Also how harmful can this be? He hasn't eaten anything except a mouth full of power once (talc free), but I am just worried? Help, thanks