How to repair a headlight with moisture/water in it!

This is how I fixed a leak in a headlight. Just remove the light and put a bead of silicone around the seem between the lens and rear housing. Remember to remove the moisture, water, condensation before you seal it.
It seems most people think water gets into a headlight from rainfall and water dripping into the light some how... but I don't think this is the case. I believe when you turn your headlight on the temperature inside the light rises drastically and once you turn them of,f a suction is created and if the outside moisture is high then the moisture gets drawn into the light and later condensates. I might be wrong..... What are your thoughts?
Get the Air Pencil for moisture removal on amazon here....http://www.amazon.com/gp/product/B00L...
For step by step repair instructions Visit http://www.how-to-detail.com/common-p...
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http://www.amazon.com/Pro-method-Head...