I don't know what Lancome puts in their eyeshadow, but it irritates my eyes. I think it might be whatever makes it shiny -- maybe nickel? It's a big pity becuse I've gotten several samples from buying other Lancome products, and I can't wear them. They have beautiful colors that blend well and I bet last a long time if you're not constantly rubbing your eyes -- which is what I end up doing when I try to wear Lancome eyeshadow. I have several friends who say the same thing. They do come in attractive packaging. I think you can also but a case that you fill with your chosen colors -- rather environmentally friendly of them. Interestingly, this problem of eye irritation does not transfer to their other eye products. I use their Sumptuous mascara as well as the white mascara base -- which works great to lengthen the life of your mascara! I also use their eye makeup remover. I think Lancome is a quality product. I wish they would make their eye shadow more hyperallegenic.