I'm totally clueless about this stuff. I've been using Clarins for years and it always stings my cheeks. Recently I heard about rosacea and wonder if I have that? I have a red nose and little, red but flat spots on my cheeks - like red marks under the skin giving the impression of rosy cheeks. My face is super-sensitive to most products, esp sun cream, and dehydrated. I read that rosacea is inflamed by the sun and I should wear sunblock and moisturiser every day but everything I try stings/burns my cheeks. I saw a recommendation for La Roche Posay Anthelios sun cream but that burns too. Please help - the counters are no help because everyone just recommends their own products! Thanks.