Ultraviolet light comes from the sun's rays but is invisible to humans.

Two of the three forms of ultraviolet light, UVA and UVB rays, have been well studied. There are both benefits and risks of exposure of these rays to humans.  Significant exposure can damage a person's skin and eyes.  Long-term damaging effects of exposure include premature aging, wrinkling, skin damage, and sometimes skin cancer.

Ultraviolet light from the sun also has many benefits:

• Improve or heal skin conditions such as psoriasis
• Protect from cancer of breast, colon, ovary, bladder, stomach, and prostate gland
• Converts ergosterol in skin into Vitamin D, strengthening bones, muscles and immune system
• Stimulates pineal gland to produce the trypamine, melatonin, which alters brain chemistry to improve mood

UVA rays from sunlight are most intense in the morning and afternoon. These rays go right through window glass and can penetrate deeply into the skin.

UVB rays are most intense around the middle of the day when the sun is brightest, between about 10 :00 a.m. to 2:00 p.m. in most areas. Window glass blocks these rays. UVB rays affect the outer layer of the skin and can cause sunburns.

Both UVA and UVB lights have been used for many years as a treatment for psoriasis.  Learn about our products.
Learn how phototherapy can help you.