I have the joy of very reactive skin. It hates temperature changes, swimming, sunshine, cold, wind, alcohol/stimulants.
I find a diet low in sugar helps the flushing and caffeine is definitely an antagonist but if I go out in cold weather I find I get red cheeks in returning to a warm house. I find it embarrassing as I look like an idiot and my cheeks sting.
Has anyone found anything that helps? Years ago I had laser treatment to try and strengthen the capillaries. It kind of helped but it wasn't a cure all sadly.