Ya true about fair skin ppl,but she stated that she tans easy. so thats not her case. Mabe the tanning bed. The sun is natrual.Read whats in sun block.read this,there is a lot more."Sunscreen Allergens
A case series report in the Australasian Journal of Dermatology (3) reported on their experience with sunscreen allergy between 1992 and 1999 and also review the international literature on sunscreen allergy. There were a total of 21 allergic reactions to sunscreen chemicals observed in 19 patients over the 8 years. There were:
9 positive photopatch reactions to oxybenzone,
8 to butyl methoxy dibenzoylmethane,
3 to methoxycinnamate and
1 to benzophenone.
No positive reactions were observed to para aminobenzoic acid.
Six patients also had positive patch tests to components of the sunscreen base.
In their experience, sunscreen chemicals are the most common cause of photoallergic contact dermatitis.
In another study reporting on 7 years experiencing of photopatch testing with sunscreen allergens in Sweden (4), of 355 patients with suspected photosensitivity tested 7.9% had an allergic reaction, and 80% of these were of photocontact origin. This is an important point, since doing patch tests only (without photesting) will miss the majority of cases of sunscreen allergy. The allergens were:"