6 citations
,
January 1967 in “Journal of Small Animal Practice” Old dogs' skin thins, loses hair, and may darken, but doesn't show some human aging signs.
4 citations
,
January 2020 in “Hair Therapy & Transplantation” Personalized nutrition is more effective for hair loss than generic supplements.
August 2023 in “Portuguese journal of dermatology and venereology” Cyclosporine can reverse hair graying.
April 2023 in “The journal of investigative dermatology/Journal of investigative dermatology” Damaged hair follicle stem cells may leave the skin to help maintain youthfulness.
August 2017 in “Journal of epidemiological research” Cancer rates are increasing in developed countries, with estrogen, aging, low vitamin D3, and HPV infection as common causes.
Amphetamine use may not cause hair loss, "geezer" traits are normal aging, not all educated older people are stereotypes, and metronidazole can rarely cause lung disease.
2 citations
,
July 2023 in “Cosmetics” Surfactants in shampoos and conditioners remove some but not all lipids from hair, and more research is needed to understand their full impact.
47 citations
,
January 2013 in “Indian Journal of Dermatology, Venereology and Leprology” Premature graying of hair may suggest health issues and currently lacks effective treatments.
2 citations
,
August 2019 in “International Journal of Cosmetic Science” Older age and certain lifestyles are linked to thinner, weaker hair, while how you see your hair relates to its thickness.
February 2026 in “Cosmetics” Fenugreek is a promising cosmetic ingredient for skin and hair care.
December 2025 in “Brazilian Journal of Hair Health” The Spiral Model helps understand hair growth changes with age and identify hair problems early.
150 citations
,
April 2013 in “Dermato-endocrinology” Estrogen therapy can reduce skin aging but has cancer risks.
68 citations
,
June 2005 in “Expert Opinion on Therapeutic Targets” Oestrogens help maintain healthy skin, heal wounds, and may protect against skin aging and cancer.
47 citations
,
January 2013 in “International Journal of Cosmetic Science” Hair diversity is influenced by complex genetics and environmental factors, requiring more research for practical solutions.
46 citations
,
May 2009 in “Maturitas” Taking DHEA for a year is generally safe for postmenopausal women but may cause acne and more facial hair without improving metabolism or aging.
20 citations
,
February 2023 in “Biology” Innovative cosmetics could safely change hair color by targeting biological hair pigmentation processes.
16 citations
,
March 2025 in “International Journal of Molecular Sciences” Extracellular vesicles show promise in skin treatments but need more research and standardization.
8 citations
,
July 2024 in “Cells” PGC-1α may improve aging skin by boosting mitochondrial function and reducing inflammation.
7 citations
,
July 2020 in “Pigment cell & melanoma research” RT1640 treatment reverses gray hair and promotes hair growth in mice.
7 citations
,
January 2020 in “Nature” Stress turns hair white by depleting color-giving cells in hair follicles through a specific neurotransmitter related to the body's stress response.
6 citations
,
April 2001 in “The Anatomical Record” A new method using hair pores can help align skin grafts better, improving results.
3 citations
,
May 2011 in “Practice nursing” As skin ages, it gets thinner, paler, and more wrinkled, and protection and care like sunblock and moisturizers are important.
January 2026 in “Frontiers in Microbiology” Enterococcus faecium broth may slow aging and improve health by boosting immunity and gut bacteria.
August 2025 in “Journal of Investigative Dermatology” Fibronectin is essential for hair follicle regeneration and may help rejuvenate aged skin.
July 2025 in “Current Issues in Molecular Biology” Bio-Pulsed sEVs improve hair growth and skin rejuvenation.
April 2024 in “Lasers in medical science” Near-infrared LED light improves skin rejuvenation and hair growth better than white LED light.
March 2014 in “CRC Press eBooks” Some nutrients and antioxidants may improve skin and hair health, but more research is needed to confirm these benefits.
January 2014 in “Journal of Investigative Dermatology” Proteins like aPKC and PDGF-AA, substances like adenosine and ATP, and adipose-derived stem cells all play important roles in hair growth and health, and could potentially be used to treat hair loss and skin conditions.
April 2018 in “The journal of investigative dermatology/Journal of investigative dermatology” Ginseng and Albizia extracts may help prevent age-related hair thinning.
450 citations
,
January 2005 in “The journal of investigative dermatology/Journal of investigative dermatology” Hair color is determined by melanin produced and transferred in hair follicles.