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GlossaryPhotoaging (Photodamaged Skin)

premature skin aging caused by repeated UV radiation exposure

Photoaging, also known as sun-induced aging, refers to the premature aging of the skin caused by repeated exposure to ultraviolet (UV) radiation from the sun or artificial sources like tanning beds. This process leads to changes such as wrinkles, loss of skin elasticity, pigmentation changes, and a rough texture, primarily due to the breakdown of collagen and the formation of abnormal elastin.

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research Topical Retinoids: Therapeutic Mechanisms in the Treatment of Photodamaged Skin

69 citations, March 2016 in “American journal of clinical dermatology”

Topical retinoids effectively improve photodamaged skin.

research The Risk of Hydroquinone and Sunscreen Over-Absorption via Photodamaged Skin Is Not Greater in Senescent Skin Compared to Young Skin: Nude Mouse as an Animal Model

18 citations, May 2014 in “International journal of pharmaceutics”

Aging and sun damage do not increase the skin's absorption of certain sunscreens and drugs.

research Evaluation of the Efficacy of Intense Pulsed Light in Skin Rejuvenation

October 2021 in “QJM: An International Journal of Medicine”

Intense Pulsed Light treatments significantly improve signs of aging and sun damage on the skin.

research Cosmetic Devices Based on Active Transdermal Technologies

19 citations, September 2015 in “Therapeutic Delivery”

Active transdermal technologies in cosmetics help deliver skin treatments effectively, but their safety and effectiveness depend on skin type and treatment choice.

research In This Issue

2 citations, April 2002 in “The journal of investigative dermatology/Journal of investigative dermatology”

Vitamin D3 is important for hair growth and protecting skin from damage caused by long-term sun exposure.

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community Sunlight: Does it Stimulate Hair Growth or Hair Loss?

in Research/Science 61 upvotes 7 months ago

The conversation discusses whether sunlight exposure affects hair growth or loss, with mixed anecdotes and theories but no clear consensus. Some suggest moderate sunlight can benefit hair by providing vitamin D, while others doubt its effectiveness compared to treatments like Minoxidil or finasteride.