4. Rosacea

Rosacea causes the skin to become irritated with patches of redness and dilated blood vessels and has no known cause. Unfortunately, most facial acids will only cause further irritation and redness and are not suitable for rosacea. Azelaic acid, which has anti-inflammatory effects, is an exception. It can decrease the redness and irritation and can be used by acne sufferers as well.

Dry Skin
Explore more ...