Does anyone else have this? For many years I have worn high factor sunscreen April- October and so am aware of some of the frequently mentioned brands (although not currently thrilled with my body shop skin defense one or my la Roche body one, but that's another thread) but I've recently started to suffer with a rash on my neck and chest (only) from both. Does anyone have any idea what the irritant ingredient might be, so that I can avoid it when I buy another sunscreen? I would say my skin is sensitive but not very.