Gee, that really sounds like an allergic reaction. As mentioned earlier, PABA allergies were similar. No allergic reaction unless I was in the sun with a PABA sunscreen--then I broke out in little blisters (like pins); step indoors and the reaction would fade away.
I don't know much about Mexoryl (it has only been approved in the US for a year and isn't in common usage). It is a chemical, not a physical block and you could be reacting to it. I can't use sunscreens with Parasol 1789--I break out. There is some controversial research on it that says that under some circumstances (e.g., you don't reapply often enough) you can burn more with Parasol than if you hadn't applied it. But, the research is controversial.
That said, get thee to a dermatologist! And, if you have an open rash or a sunburn, the only sunscreen you should be applying is a physical block--TiO2 or ZnO.




Reply With Quote