I have tested my jeans and have one pair of Calvin Klein jeans which test negative for nickel
on the buttons and rivets (and I know I don’t have a reaction to them either). The rivets are
a dull (very dull) silver color – not shiny and not copper or bronze color.
You could always sneak a nickel test kit into the dressing room to check a new pair of jeans out…!
At this point, this may be the most reliable way until manufacturers start labelling them
If it comes to it, and you have the equipment and skills, you can fix a pair of your current
jeans with nickel-free buttons and rivets.
I will continue to investigate nickel-free jeans and post the results here – if you find a
manufacturer qualifying their jeans as nickel-free, please let me know.
Update 2/23/2011: Levi Straus’ Restricted Substances List 2010 restricts (does not ban) nickel from parts supplied to them.