Warning with this product - Red Rock Outdoor Gear 2-sided Paint Stick Face Paint Green & Black

So i bought this face paint from Opticsplant to get me over the hump for free shipping and it arrived perfectly because Opticsplanet is awesome. However, the first thing you see when you get this is a warning that "This product contains chemicals known to the state of California to cause cancer, or birth defect or other reproductive harm."

I realize manufacturers have to warn about everything these days, but this warning should be in the item description of the product. It's not on either Opticsplanet's page or Red Rock's page. Sure would be nice to know what's in this thing if it may cause cancer. I have an email out to Red Rock to see about this, so maybe it's nothing but I'll probably never use it.