Well, it's a response from your immune system that mistakenly identifies airborne substances like pollen as harmful.  The body then goes into action and  produces antibodies to combat it.  Then each time you encounter that substance (like pollen) those antibodies tell your immune system to release chemicals like histamine into your bloodstream. Then histamine causes all those annoying symptoms like headaches, itchy eyes, swelling, and congestion.

Our skin gives us a much deeper picture as to what is going on within the body, if its hormonal, environmental, toxin overload, and so much more.

The skin is the largest organ in the body, covering 22 square feet, on average. The skin also acts as a mirror for overall health. Have you ever noticed dark circles under your eyes when you don’t get enough sleep, blemishes cropping up when you’re stressed, or dull, dry skin when you aren’t eating right?