hi stacey and welcome to neurotalk.

i'm short on time...but thought you might want to check the lipstick case. if it has nickel..your lipstick can absorb it or you might get the nickel from just touching it.

aol just had some articles on toxins in makeup.

edited to add: here is a link i found with some good info. i hope it helps. http://dermnetnz.org/dermatitis/nickel-allergy.html