I just started using vitamin c on my face (the ordinary one) and perhaps it is a coincidence but I now have an orange stain on my right hand (fingers I put it on with I think)
Is there anyway this could be linked to it?!
It's all a bit too much like the green staining cream from this years apprentice 
Is it just a coincidence?!
My hand looks permanently dirty/like I've been peeling oranges!!