Natural Health: acne rosacea

I’ve tried every lotion, potion, and medication, to no avail. It seems to be triggered by stress and junk food, and sunlight makes it worse. How can I reduce the redness?
Acne rosacea is a stressful skin condition: it appears across the face and so cannot be hidden. It can differ in appearance — from a flushed and embarrassed look to intense inflammation with raised pustules.