July 1980 in “Journal of The American Academy of Dermatology” The conference concluded that understanding hair and nail disorders is important, iron deficiency may be linked to hair loss, and while some treatments for skin conditions are effective, they may have risks and high costs.
20 citations
,
September 2004 in “Journal of Anatomy” The inner root sheath evolved to help hair grow safely through the skin in mammals.
July 2025 in “Scientific Reports” Dermal papilla cell-conditioned medium can help reduce skin aging caused by oxidative stress.
28 citations
,
December 2011 in “Biocatalysis and biotransformation” PDI helps restore over-bleached hair's strength and structure by attaching special peptides.
2 citations
,
November 2018 in “International Journal of Cosmetic Science” Chamomile extract can protect hair from damage caused by light.
1 citations
,
January 2017 in “Clinical approaches and procedures in cosmetic dermatology” Hair can't be reliably repaired once damaged; prevention and proper product use are key to maintaining hair health.
January 2026 in “Frontiers in Bioscience-Landmark” Araliadiol protects skin cells from damage by boosting antioxidant defenses.
184 citations
,
October 2007 in “Proceedings of the National Academy of Sciences of the United States of America” Sulforaphane from broccoli can help protect skin from sun damage.
59 citations
,
January 2013 in “Annals of Dermatology” Asian hair is more resistant to UV damage due to higher lipid content.
12 citations
,
December 2021 in “Aging” A new painless method to collect hair follicles helps study DNA damage and aging.
4 citations
,
January 2007 in “Sen'i Gakkaishi” Permed hair degrades faster and shows more damage after protease treatment compared to untreated hair.
Ca²⁺-mediated protein citrullination controls cell growth in the CNS and may help treat brain tumors.
May 2023 in “Current Applied Science and Technology” Higher power CO2 laser causes more severe skin burns and damage.
January 2023 in “Biocell” Safflower extract helps protect hair follicle cells from damage caused by chemotherapy.
April 2019 in “Journal of Investigative Dermatology” Caffeine can protect scalp hair follicles from damage caused by UV radiation.
January 2005 in “Seibutsu Butsuri/Seibutsu butsuri” Chemical treatments damage hair more than UV exposure, making it thinner and less flexible.
11 citations
,
February 2018 in “Amino acids” Copper and iron cause keratin damage in hair by converting methionine to homocysteine.
January 2015 in “Springer eBooks” Hair damage shows as fragility, dullness, and discoloration, varies by ethnicity, and is worsened by cosmetic procedures and diseases.
3 citations
,
March 2024 in “Discover Applied Sciences” Spirulina proteins can improve hair smoothness and strength in hair care products.
291 citations
,
April 2010 in “Gastroenterology” Certain proteins, Lgr5 and Lgr6, are important markers of adult stem cells and are involved in tissue repair and cancer development.
60 citations
,
January 2004 in “The journal of investigative dermatology/Journal of investigative dermatology” Applying a specific inhibitor lightens skin and hair color.
58 citations
,
October 2016 in “Journal of Investigative Dermatology” Activating Nrf2 protects human hair follicles from oxidative stress and helps prevent hair growth inhibition.
52 citations
,
January 2005 in “International journal of experimental pathology” Melatonin may reduce skin damage caused by X-rays in rats.
38 citations
,
October 2011 in “Analytical biochemistry” Hair proteins have weak spots in their α-helical segments.
31 citations
,
February 2019 in “International Journal of Cosmetic Science” Caffeine applied to the scalp can protect hair follicles from UV damage.
30 citations
,
November 2013 in “PLOS ONE” Androgen receptor signaling causes early aging of cells important for hair growth by damaging their DNA.
28 citations
,
December 2012 in “The American Journal of Cosmetic Surgery” Proteins from stem cells improved hair growth in patients with hair loss.
25 citations
,
April 2018 in “Electromagnetic biology and medicine” Mobile phone radiation may cause DNA damage in human ear hair follicle cells.
24 citations
,
January 2012 in “Journal of Cellular Biochemistry” C-reactive protein helps monocytes stick to blood vessel cells by causing oxidative stress.
20 citations
,
February 2017 in “International Journal of Dermatology” Honokiol helps protect skin from damage and aging caused by cigarette smoke.