That's interesting about new allergies showing up every 7 years. Sort of gives new meaning to the term "seven year itch". Bahaha
Seriously though, I have the same thing with metals. Can't wear anything but 14K gold in my ears. That's been since my ears were first pierced, though, about 30 years ago. But another allergy to medication showed up a few years ago. Can't recall the exact timing, but 7 years sounds about right. Now the makeup thing. Gah!
I did think about my makeup possibly being old, so the first thing I did was throw everything out, and buy a new set of all my old favorites. I also waited about 10 days to try again to be sure I was completely clear of whatever it was. I immediately broke out again with the new stuff.
Guess I'll treat myself to a trip to the makeup counter tomorrow and see what I can come up with. A person can't hide behind dark sunglasses forever.
Thanks to everybody that responded. You've helped a lot.