Most of the skin changes that occur as we age are accelerated by sun exposure.
Skin is composed ofthree layers: theepidermis, thedermis, andsubcutaneous tissue.
UV radiation damages these important proteins, leading tophotoagingskin damage.
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Photoaging looks like premature aging.
Exposure to UV light can cause wrinkles, sagging skin, and an uneven skin tone.
UVA rays have longer wavelengths and can deeply penetrate the dermis.
The rays damage existing collagen, which causes increased elastin production.
Such abnormal amounts of elastin lead to the production of enzymes known asmetalloproteinasesthat repair damaged collagen.
An age spot is a spot of pigmentation triggered by sun exposure.
Who Is Most at Risk?
Some people are more vulnerable to photoaging.
See a dermatologist if you notice rough, scaly spots on your skin.
These may be actinic keratoses, which can be precancerous.
Keep an eye out for other signs of skin cancer, too.
Everyone should see a dermatologist for a skin check at least once a year.
If you are at risk for skin cancer, you may need more frequent exams.
Daily system of sunscreen can also reduce the risk of developing skin cancer.
Being out in the sun without sunglasses may acceleratemacular degeneration, the leading cause of blindness with age.
Is Sunlight a Good Source of Vitamin D?
These medications were first used for acne and then found toreduce wrinkling, especially fine lines and facial wrinkles.
Chien AL, Kang S.Photoaging.
In: Elmets CA, ed.
Waltham, Mass: UpToDate; 2022.
Skin Cancer Foundation.Annual exams.
American Academy of Dermatology.Vitamin D.
