T.S.
The same thing happens to my son with things like spagetti sauce and believe it or not eggs....but it goes away when he's done eating and cleaned up, so we never worry about it. It may not be so much an alergy but just sensitive skin to what's in the product. You could probably bring it up to a pediatrician, but in our case, as long as it doens't seem to be affecting him in any way but irritation on the sking (it doesn't bother him)we are just letting it be.