Cosmetics for dry skin

As butterscotch said diet no way affect your skin type. If you found oil in the nose area alone then it happens because of the large intake of oily food. Regular cleaning of your face with fresh water helps in recover out of it. Reference:-

No, diet definitely has nothing to do with our skin type. If your skin type is dry but oily in the nose area, I think you have a combination skin type. The best makeup for you is a liquid or cream-based foundation. You can apply that with sponge or with a foundation brush. Since you have dry skin, it's better to stay away from powder foundations. You can use the liquid or cream foundation on your nose but finish it off with a powder.

Yes, if you eat a lot of greasy foods, like peanuts, there is a possibility that you will have an oily face. Usually the nose area gets oily than the other part of the face.

i make a point to avoid eating greasy foods

Avoid taking more oily foods.wash the face daily 3 to 4 times...Hope this works