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How Sunburns Work (0:58)
Sunburns can be painful, and that's why physicians recommend using sunscreen to prevent sunburn from overexposure to the UV radiation of the sun. See how sunburn and sunscreen work in this HowStuffWorks video.
Light Therapy Good For Skin (1:21)
Watch this video showing how light therapy can be good for battling skin-related conditions on HowStuffWorks. Learn how light therapy works and how it can help to treat certain skin conditions, in moderation. Video courtesy of MultiVu.
Sun and Skin (1:26)
Watch this video about the sun and our skin on HowStuffWorks. Researchers have found that Vitamin D created in the skin can trigger an immune response in the skin itself. Learn how human skin works in this video from ScienCentral.
Not Getting Enough Sun Can Be Harmful (1:32)
We often associate getting too much sun with getting cancer. But, is not getting enough sun even more harmful? A new study reveals a surprising relationship between sunlight, vitamin D, and cancer.
Organ Systems: The Integumentary System (0:27)
The integumentary system creates a boundary between the human body and the outside world.
