I also have extremely sensitive and allergy prone skin. When it's going through a bad phase the best i can do is splash it with water and leave it - it gets very dry without the moisturiser but at least it starts healing again.
Some products that are kind enough to my skin are the avene tolerane extreme range, bioderma crealine h20, lush ultrabland cleanser, lush celestial moisturiser, embryolisse lait creme concentrate, and the basic aveeno moisturiser. Though my skin still sometimes reacts with these.
As for makeup - I never wear any unless i need it (when my face is very red, which is actually the worst time i could use it but i have no choice). I have tried bare minerals powder mineral foundation which is good enough, but you can tell that i'm wearing makeup when i wear it which i don't like, so i prefer armani luminous silk foundation, or laura mercier silk creme foundation if my face needs extra couverage if it's red. with these my skin can either be fine after wearing or i could be left with dry red patches. depending on how my skin is feeling that day.