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  2. Intrinsic and extrinsic ageing - Wikipedia

    en.wikipedia.org/wiki/Intrinsic_and_extrinsic_ageing

    Such an ageing process may include qualitative and quantitative changes and includes diminished or defective synthesis of collagen and elastin in the dermis. [citation needed] Extrinsic ageing of skin is a distinctive declination process caused by external factors, which include ultra-violet radiation, cigarette smoking, air pollution, among ...

  3. Photoaging - Wikipedia

    en.wikipedia.org/wiki/Photoaging

    Aging is a complex, progressive process that leads to functional and aesthetic changes in the skin. This process can result from both intrinsic (i.e., genetically determined) as well as extrinsic processes (i.e., environmental factors).

  4. Ageing - Wikipedia

    en.wikipedia.org/wiki/Ageing

    Ageing (or aging in American English) is the process of becoming older. The term refers mainly to humans , many other animals , and fungi, whereas for example, bacteria, perennial plants and some simple animals are potentially biologically immortal .

  5. Top dermatologists share 6 sneaky signs that your skin is ...

    www.aol.com/article/lifestyle/2016/09/19/top...

    According the experts, there are a few lesser-known and more subtle signs of skin aging that are good to know about. Skip to main content. Lifestyle. 24/7 help. For premium support please call: ...

  6. Free-radical theory of aging - Wikipedia

    en.wikipedia.org/wiki/Free-radical_theory_of_aging

    Free radicals that are thought to be involved in the process of aging include superoxide and nitric oxide. [25] Specifically, an increase in superoxide affects aging whereas a decrease in nitric oxide formation, or its bioavailability, does the same. [25]

  7. The best skin care routine for your 50s, according to ... - AOL

    www.aol.com/lifestyle/best-skin-care-routine-for...

    Retinol is a "potent anti-aging" type of retinoid, which is a form of vitamin A, that boosts your skin's collagen production and plumps up the skin in the process, while reducing the appearance of ...